divergent synthesis of various iminocyclitols from d ... divergent synthesis of various...
TRANSCRIPT
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Divergent synthesis of various iminocyclitols from D-ribose
Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh
Ramapanicker*
Department of Chemistry and Center for Environmental Science and EngineeringIndian Institute of Technology Kanpur
Kanpur, 208016 India
Supplementary Information
Contents Page Numbers
1. General experimental procedures and procedure for the
synthesis of benzyl derivatives for NMR Correlation
2. NMR correlation data for benzyl derivatives
3. 1H and 13C NMR spectra for all the compounds
4. HPLC Data
02–07
08–28
29–68
69–80
Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.This journal is © The Royal Society of Chemistry 2015
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Procedure for Benzyl Protection:
Compound11a(0.8 g, 2 mmol, 1 equiv) in DMF (10 mL) was added to a stirred suspension of sodium
hydride (0.14 g, 6 mmol, 3 equiv) in DMF (5 mL) at 0 ºC under nitrogen atmosphere and stirring was
continued for 20 min. Benzyl bromide (0.7 mL, 6 mmol, 3 equiv) was added to the reaction mixture and
stirred at room temperature for 4 h. After complete disappearance of starting material on TLC, the
reaction was quenched with water (30 mL). Organic layer was extracted with diethyl ether (2×20 mL),
and the combined organic phases were washed with brine (1×20 mL), dried over anhydrous Na2SO4,
filtered, concentrated, and purified by column chromatography.
O O
NTBDPSO O
O O
HN
TBDPSO OH
NaH, DMF, BnBr0 C to rt 4h
30a (89%)10a
12
43
56
7 8
9
Ph Ph10
11
Compound (30): Column chromatography (petroleum ether/EtOAc, 9:1); oily liquid (0.21 g, 0.33 mmol,
89%); [α]D25 = +12.8 (c 0.8, CHCl3); IR νmax (thin film):3068, 1561 cm-1; 1H NMR (500 MHz, CDCl3): δ
7.74-7.68 (m, 4H, Ar-H), 7.45-7.17 (m, 16H, Ar-H), 4.73-4.71 (m, 1H, C3H), 4.66 (m, 3H, C11H,C10H),
4.56 (d, J = 6.3 Hz, 1H, C2H), 4.11 (d, J = 13.7 Hz, 1H, C10H), 4.07-4.04 (m, 1H, C5H), 3.97-3.92 (m, 2H,
C6H), 3.55-3.52 (m, 1H, C5H), 3.43-3.39 (m, 1H, C4H), 3.19-3.16 (m, 1H, C1H), 1.50 (s, 3H, C7H), 1.31
(s, 3H, C8H), 1.08 (s, 9H, (CH3)3C-Si) ppm; 13C NMR (125 MHz, CDCl3): δ 141.0(C-Ar), 135.8(C-Ar),
135.7(C-Ar), 133.7(C-Ar), 129.7(C-Ar), 128.6(C-Ar), 128.5(C-Ar), 128.4(C-Ar), 127.7(C-Ar), 127.0(C-
Ar), 115.5(C-9), 82.1(C-11), 81.1(C-10), 66.6(C-3), 66.5(C-2), 65.3(C-5), 62.6(C-6), 59.3(C-1), 52.5(C-
4), 27.0 ((CH3)3C-Si), 26.5(C-8), 24.8(C-7), 19.3(C-Si) ppm HRMS (ESI-TOF) m/z [M+H]+ calcd for
C39H48NO4Si 622.3353; found 622.3354.
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NaH, DMF, BnBr0 C to rt 4h
31a (85%)18a
HN
OOMOMO
OHN
OOMOMO
O
1
23
5
4
6
7
8
PhPh
9 10
Compound(31a): In a similar manner as described for compound 30a, Column chromatography
(petroleum ether/EtOAc, 9:1); oily liquid (0.17 g, 0.39mmol, 85%);[α]D25 = -9.3 (c 0.2, CHCl3); IR νmax
(thin film): 3028, 1495 cm-1; 1H NMR (500 MHz, CDCl3): δ 7.32-7.23 (m, 10H, Ar-H), 4.64 (d,J = 6.7
Hz, 1H, -O-CH2-O-), 4.61 (d,J= 7.3Hz, 1H, -O-CH2-O-), 4.56 (d, J = 11.6 Hz, 1H, C10H), 4.48-4.44 (m,
2H, C6H, C10H), 4.16-4.11 (m, 2H, C6H, C9H), 3.88-3.84 (m, 1H, C2H), 3.81 (dd,J = 10.7, 2.1 Hz, 1H,
C3H), 3.59 (dd,J = 11.0, 4.2 Hz, 1H, C4H), 3.30 (s, 3H, -OCH3), 3.26 (d,J = 13.6Hz, 1H, C9H), 2.77 (dd,J
= 11.0, 5.5 Hz, 1H, C1H), 2.51-2.48 (m, 1H, C5H), 2.36-2.33 (t, J = 11.0 Hz, 1H, C1H), 1.54 (s, 3H, C7H),
1.39 (s, 3H, C8H) ppm; 13C NMR (125 MHz, CDCl3): δ 139.0(C-Ar), 138.1(C-Ar), 128.9(C-Ar), 128.4(C-
Ar), 128.3(C-Ar), 127.9(C-Ar), 127.7(C-Ar), 127.0(C-Ar), 109.4(C-11), 95.9(-O-CH2-O-), 74.9(C-10),
74.5(C-9), 73.4(C-2), 71.7(C-3), 68.7(C-4), 63.6(C-6), 57.1(-OCH3), 55.5(C-5), 50.5(C-1), 28.2(C-8),
26.3(C-7) ppm; HRMS (ESI-TOF) m/z [M+H]+ calcd for C25H34NO5 428.2437; found 428.2431.
1. NaH, DMF, BnBr0 C to rt 4h
18b
HN
OOMOMO
OH
2. H2, Pd/C,rt, 4 hMeOH
HN
OOMOMO
O
31b (69%)
1
2
3
4
5 6
7
8
910
Ph
11
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Compound(31b):Column chromatography (petroleum ether/EtOAc, 1:1); oily liquid (0.11 g, 0.32mmol,
69%);[α]D25 = +21.2 (c 0.8, CHCl3); IRνmax (thin film): 3018, 1495 cm-1; 1H NMR (500 MHz, CDCl3): δ
7.30-7.32 (m, 4H, Ar-H), 7.28-7.26 (m,1H, Ar-H), 4.74 (d, J = 6.8 Hz, 1H, -O-CH2-O-), 4.66 (d, J = 6.8
Hz, 1H, -O-CH2-O-), 4.57 (d, J = 12.0 Hz, 1H, C9H ), 4.51 (d, J = 12.0 Hz, 1H, C9H), 4.35 (dd,J = 6.8,
4.0 Hz, 1H, C3H), 4.24 (dd, J = 7.4, 2.8 Hz, 1H, C4H), 3.82-3.80 (m, 1H, C2H), 3.55-3.49 (m, 2H, C6H),
3.37 (s, 3H–OCH3), 3.09 (dd, J = 13.1, 6.8 Hz, 1H, C1H), 3.03 (dt, J = 6.8, 2.3 Hz, 1H, C5H), 2.88 (dd, J
= 13.1, 4.6 Hz, 1H, C1H), 2.1 (bs, 1H, N10H)1.42 (s, 3H, C7H), 1.38 (s, 3H, C8H)ppm; 13C NMR (125
MHz, CDCl3): δ 138.2(C-Ar), 128.4(C-Ar), 127.8(C-Ar), 127.7(C-Ar), 109.4(C-11), 96.1(-O-CH2-O-),
73.8(C-9), 73.4(C-2), 73.0(C-3), 70.0(C-4), 69.8(C-6), 55.6(-OCH3), 54.1(C-5), 44.9(C-1), 26.0(C-8),
25.0(C-7) ppm; HRMS (ESI-TOF) m/z [M+H]+ calcd for C18H28NO5 338.1967; found 338.1969.
HN
OO
TBDPSO OH
23a
N
OO
TBDPSO O
32a (85%)
NaH, DMF, BnBr0 C to rt 4h
1
9 8
7 65
432
PhPh
1011
12
Compound(32a):Column chromatography (petroleum ether/EtOAc, 9:1); oily liquid (0.15 g, 0.23mmol
85%); [α]D25 = -30.64 (c 0.12, CHCl3); IR νmax (thin film): 3060, 1536 cm-1; 1H NMR (500 MHz, CDCl3):
δ 7.68-7.64 (m, 4H, Ar-H), 7.42-7.14 (m, 16H, Ar-H), 4.46-4.35 (m, 3H, C8H, C3H), 4.31 (d, J = 2.8 Hz,
2H, C2H), 4.02-3.97 (m, 2H, C9H), 3.90 (dd, J = 5.5, 9.5 Hz, 1H, C5H), 3.79 (d, J = 14.9 Hz, 1H, C9H),
3.29-3.23 (m, 3HC1H, C6H), 1.97-1.91 (m, 1H, C4H), 1.81-1.75 (m, 1H, C4H), 1.55 (s, 3H, C10H), 1.35 (s,
3H, C11H), 1.05 (s, 9H, (CH3)3C-Si) ppm; 13C NMR (125 MHz, CDCl3): δ 141.9(C-Ar), 138.6(C-Ar),
135.7(C-Ar), 135.6(C-Ar), 134.9(C-Ar), 133.7(C-Ar), 129.7(C-Ar), 129.6(C-Ar), 128.7(C-Ar), 128.6(C-
Ar), 128.5(C-Ar), 128.4(C-Ar), 128.2(C-Ar), 128.0(C-Ar), 127.7(C-Ar), 127.6(C-Ar), 127.5(C-Ar),
126.5(C-Ar), 108.0(C-12), 73.0(C-8), 73.00(C-6), 72.8(C-9), 71.6(C-7), 63.3(C-2), 58.0(C-3), 55.9(C-1),
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55.2(C-5), 27.5(C-4), 27.5(C-10), 26.9(CH3)3C-Si, 24.8(C-11), 19.3(C-Si) ppm; HRMS (ESI-TOF) m/z
[M+H]+ calcd for C40H50NO4Si 636.3509; found 636.3509.
HN
OO
TBDPSO OH
23b
N
OO
TBDPSO O
32b (89%)
NaH, DMF, BnBr0 C to rt 4h
1
9 8
7 65
432
PhPh
1011
12
Compound(32b):Column chromatography (petroleum ether/EtOAc, 9:1); oily liquid (0.2 g, 0.31mmol
89%); [α]D25 = -19.1 (c 0.8, CHCl3); IR νmax (thin film):3059, 1589 cm-1; 1H NMR (400 MHz, CDCl3): δ
7.62-7.54 (m, 4HAr-H), 7.40-7.12 (m, 16H, Ar-H), 4.38-4.35 (m, 1H, C2H), 4.33-4.34 (m, 2H, C8H,
C3H), 4.28-4.20 (m, 1H, C8H), 3.90-3.84 (m, 2H, C6H), 3.77-3.71 (m, 2H, C9H), 3.44-3.40 (m, 1H, C7H),
3.32-3.28 (m, 1H, C7H), 3.17-3.12 (m, 1H, C1H) 2.94-2.88 (m, 1H, C5H), 1.92-1.86 (m, 1H, C4H), 1.76-
1.68 (m, 1H, C4H), 1.50 (s, 3H, C11H), 1.33 (s, 3H, C10H), 0.99 (s, 9H, (CH3)3C-Si)) ppm; 13C NMR (100
MHz, CDCl3): δ 141.9(C-Ar), 138.3(C-Ar), 135.69(C-Ar), 135.61(C-Ar), 133.7(C-Ar), 133.6(C-Ar),
129.5(C-Ar), 128.3(C-Ar), 128.0(C-Ar), 127.8(C-Ar), 127.6(C-Ar), 127.5(C-Ar), 126.3(C-Ar), 108.2(C-
12), 73.2(C-8), 73.1(C-3), 72.9(C-2), 72.4(C-6), 64.0(C-7), 62.6(C-9), 58.6(C-1), 53.0(C-5), 28.4(C-4),
28.1(C-10), 26.8(CH3)3C-Si, 25.6(C-11), 19.2(C-Si) ppm HRMS (ESI-TOF) m/z[(M+H)-(HCl)]+ calcd
for C40H50NO4Si 636.3509; found 636.3509.
N
O O
MOMO
O
33a (86%)
HN
O O
MOMO
OH
29a
NaH, DMF, BnBr0 C to rt 4h
PhPh
1
234
5
6 7
8 9
1011
12
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Compound(33a):Column chromatography (petether/Ethyl acetate 8:2); oily liquid (0.3 g, 0.67 mmol
86%); [α]D25 = +18.6 (c 0.22, CHCl3); IR νmax (thin film): 2947, 1436 cm-1; 1H NMR (500 MHz, CDCl3): δ
7.38-7.21 (m, 10 H, Ar-H), 4.56-4.41 (m, 4H, -O-CH2-O-, C4H, C9H), 4.49-4.46 (m, 2H, C9H, C3H), 4.00
(d, J = 9.7 Hz, 1H, C5H), 3.78 (d, J = 14.3 Hz, 1H, C8H), 3.60 (d, J = 14.3 Hz, 1H, C8H), 3.56 (dd, J =
9.7, 7.1 Hz, 1H, C7H), 3.47 (dd, J = 9.7, 5.7 Hz, 1H, C7H), 3.44-3.40 (m, 1H, C1H), 3.29 (s, 3H, -OCH3),
3.20 (dd, J = 14.3, 10.0 Hz, 1H, C6H), 2.65 (d, J = 14.9 Hz, 1H, C6H), 1.90-1.83 (m, 2H, C2H), 1.54 (s,
3H, C11H), 1.38 (s, 3H, C10H) ppm; 13C NMR (125 MHz, CDCl3): δ 140.0 (C-Ar), 138.3 (C-Ar), 128.8
(C-Ar), 128.4 (C-Ar), 128.3 (C-Ar), 127.9 (C-Ar), 127.6 (C-Ar), 127.0 (C-Ar), 107.7 (C-12), 94.9 (-O-
CH2-O-), 79.2 (C-9), 73.4 (C-4), 73.1 (C-3), 72.7 (C-5), 69.8 (C-8), 56.0 (C-7), 55.6 (-OCH3), 50.6 (C-1),
50.1 (C-6), 36.2 (C-2), 29.7 (C-10), 25.9 (C-11) ppm; HRMS (ESI-TOF) m/z [M+H]+ calcd for
C26H36NO5 442.2593; found 442.2591.
N
O O
MOMO
O
33b (86%)
HN
O O
MOMO
OH
29b
NaH, DMF, BnBr0 C to rt 4h
PhPh
1
234
5
6 7
8 9
1011
12
Compound(33b):Column chromatography (petether/Ethyl acetate 8:2); oily liquid (0.25 g, 0.56 mmol,
87%); [α]D25 = +13.3 (c 1.6, CHCl3); IR νmax (thin film): 2947, 1436 cm-1; 1H NMR (400 MHz, CDCl3): δ
7.36-7.22 (m, 10 H, Ar-H), 4.62 (d, J = 8.6 Hz, 1H, -O-CH2-O-), 4.55-4.39 (m, 5H, -O-CH2-O-, C4H,
C9H, C3H), 3.93-3.90 (m, 2H, C5H, C8H), 3.79 (dd, J = 12.6, 8.6 Hz, 1H, C7H), 3.74 (d, J = 17.7 Hz, 1H,
C8H), 3.47 (dd, J = 12.0, 6.3 Hz, 1H, C7H), 3.28 (s, 3H, -OCH3), 3.19-3.14 (m, 2H, C6H, C1H), 2.70 (dd, J
= 18.9, 6.9 Hz, 1H, C6H), 2.37-2.28 (m, 1H, C2H), 2.10-2.06 (m, 1H, C2H), 1.47 (s, 3H, C11H), 1.36 (s,
3H, C10H) ppm; 13C NMR (100 MHz, CDCl3): δ 140.3 (C-Ar), 138.5 (C-Ar), 128.5 (C-Ar), 128.4 (C-Ar),
128.3 (C-Ar), 127.6 (C-Ar), 127.0 (C-Ar), 107.4 (C-12), 96.3 (-O-CH2-O-), 78.3 (C-9), 75.5 (C-4), 73.9
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(C-3), 73.3 (C-5), 70.4 (C-8), 59.4 (C-7), 58.2 (-OCH3), 55.4 (C-1), 48.3 (C-6), 32.4 (C-2), 26.8 (C-10),
24.3 (C-11) ppm; HRMS (ESI-TOF) m/z [M+H]+ calcd for C26H36NO5 442.2593; found 442.2596.
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NMR Correlation data for benzyl derivatives
Compound 30
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
BnN
TBDPSO OBn
O O
BnN
TBDPSO OBn
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9
O O
BnN
TBDPSO OBn
1H-1H COSY (500 MHz)
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10
O O
BnN
TBDPSO OBn2
4
5
3
H
HH
H
nOe spectrum (irradiation of H-4)
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Compound 31a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
BnN
MOMOO
O
OBn
BnN
MOMOO
O
OBn
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BnN
MOMOO
O
OBn
1H-1H COSY (500 MHz)
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13
4
5
BnN
MOMOO
O
OBn
3
26 H
H
H
H
H
5.4%
nOe spectrum (irradiation of H-2)
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Compound 31b
1H NMR (500 MHz, CDCl3) spectrum of
13C NMR (125 MHz, CDCl3)
HN
MOMOO
O
OBn
HN
MOMOO
O
OBn
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HN
MOMOO
O
OBn
1H-1H COSY (500 MHz)
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4
5
BnN
MOMOO
O
OBn
3
2H
H
H
H
1.2%
nOe spectrum (irradiation of H-4)
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Compound32a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
BnN
OO
TBDPSO OBn
BnN
OO
TBDPSO OBn
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BnN
OO
TBDPSO OBn
-1.--
1H-1H COSY (500 MHz)
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BnN
OO
TBDPSO OBn2
4
5
6
H
H
HH
nOe spectrum (irradiation of H-2)
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20
Compound 32b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
BnN
OO
TBDPSO OBn
BnN
OO
TBDPSO OBn
![Page 21: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/21.jpg)
21
BnN
OO
TBDPSO OBn
1H-1H COSY (500 MHz)
![Page 22: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/22.jpg)
22
BnN
OO
TBDPSO OBn2
4
5
6
H
H
HH
7.9%
3.2%
nOe spectrum (irradiation of H-2)
![Page 23: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/23.jpg)
23
Compound 33a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
BnN
O O
MOMO
OBn
BnN
O O
MOMO
OBn
![Page 24: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/24.jpg)
24
BnN
O O
MOMO
OBn
1H-1H COSY (500 MHz)
![Page 25: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/25.jpg)
25
BnN
O O
MOMO3
4 5
72OBn
H H
HHH
4.8%
nOe spectrum (irradiation of H-2)
![Page 26: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/26.jpg)
26
Compound 33b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
BnN
O O
MOMO
OBn
BnN
O O
MOMO
OBn
![Page 27: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/27.jpg)
27
BnN
O O
MOMO
OBn
1H-1H COSY (500 MHz)
![Page 28: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/28.jpg)
28
BnN
O O
MOMO3
4 5
72OBn
H H
HHH
8.2%
8.8%
nOe spectrum (irradiation of H-2)
![Page 29: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/29.jpg)
29
Compound 6
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OHOTBDPS
O O
OHOTBDPS
![Page 30: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/30.jpg)
30
Compound 7
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS
O O
OMsOTBDPS
![Page 31: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/31.jpg)
31
Compound 8
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS
OH
O O
OMsOTBDPS
OH
![Page 32: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/32.jpg)
32
Compound 9
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS
O
O O
OMsOTBDPS
O
![Page 33: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/33.jpg)
33
Compound10a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
TBDPSO
OHCbzN
NHCbz
MsO
O O
TBDPSO
OHCbzN
NHCbz
MsO
![Page 34: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/34.jpg)
34
Compound10b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
TBDPSO
OHCbzN
NHCbz
MsO
O O
TBDPSO
OHCbzN
NHCbz
MsO
![Page 35: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/35.jpg)
35
Compound 11a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
HN
TBDPSO OH
12
43
56
7 8
9
O O
HN
TBDPSO OH
12
43
56
7 8
9
![Page 36: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/36.jpg)
36
Compound 11b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
HN
TBDPSO OH
12
43
56
7 8
9
O O
HN
TBDPSO OH
12
43
56
7 8
9
![Page 37: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/37.jpg)
37
Compound1a
1H NMR (500 MHz, D2O) spectrum of
13C NMR (125 MHz, D2O) spectrum of compound 1a
HO OH
HN
HO OH•HCl
12
3467 5
HO OH
HN
HO OH•HCl
12
3467 5
![Page 38: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/38.jpg)
38
Compound1b
1H NMR (400 MHz, D2O)
13C NMR (100 MHz, D2O)
HO OH
HN
HO OH•HCl
12
3
4
3
24
HO OH
HN
HO OH•HCl
12
3
4
3
24
![Page 39: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/39.jpg)
39
Compound12
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMOMOTBDPS
O O
OMOMOTBDPS
![Page 40: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/40.jpg)
40
Compound 13
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3
O O
OMOMHO
O O
OMOMHO
![Page 41: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/41.jpg)
41
Compound 14
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMOMOMs
O O
OMOMOMs
![Page 42: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/42.jpg)
42
Compound 15
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
MOMO
O O
OMsOH
MOMO
O O
OMsOH
![Page 43: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/43.jpg)
43
Compound16
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
MOMO
O O
OMsO
MOMO
O O
OMsO
![Page 44: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/44.jpg)
44
Compound17a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
MOMOO
O
MsO OHCbzN
NHCbz
MOMOO
O
MsO OHCbzN
NHCbz
![Page 45: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/45.jpg)
45
Compound7b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
MOMOO
O
OHCbzN
NHCbz
MsO
MOMOO
O
OHCbzN
NHCbz
MsO
![Page 46: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/46.jpg)
46
Compound18a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
OOMOMO
OH
1
23
5
4
6
7
89
HN
OOMOMO
OH
1
23
5
4
6
7
89
![Page 47: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/47.jpg)
47
Compound18b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
OOMOMO
OH
1
23
5
4
6
7
89
HN
OOMOMO
OH
1
23
5
4
6
7
89
![Page 48: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/48.jpg)
48
Compound2a
1H NMR (500 MHz, D2O)
13C NMR (125 MHz, D2O)
1
HN
OHOHHO
OHHCl
3
4
76
5
2
1
HN
OHOHHO
OHHCl
3
4
76
5
2
![Page 49: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/49.jpg)
49
Compound 2b
1H NMR (500 MHz, D2O)
13C NMR (100 MHz, D2O)
1
HN
OHOHHO
OHHCl
3
4
76
5
2
1
HN
OHOHHO
OHHCl
3
4
76
5
2
![Page 50: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/50.jpg)
50
Compound 19
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
OH
O O
OEt
TBDPSO
O
OH
O O
OEt
TBDPSO
O
![Page 51: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/51.jpg)
51
Compound 20
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS
CO2Et
O O
OMsOTBDPS
CO2Et
![Page 52: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/52.jpg)
52
Compound21
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS
CHO
O O
OMsOTBDPS
CHO
![Page 53: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/53.jpg)
53
Compound2a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3) spectrum of compound 22a
O O
OMsOTBDPS NCbz
NHCbz
OH
O O
OMsOTBDPS NCbz
NHCbz
OH
![Page 54: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/54.jpg)
54
Compound 22b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMsOTBDPS NCbz
NHCbz
OH
O O
OMsOTBDPS NCbz
NHCbz
OH
![Page 55: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/55.jpg)
55
Compound 23a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
OO
TBDPSO OH17 6
5
432
1012
HN
OO
TBDPSO OH17 6
5
432
1012
![Page 56: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/56.jpg)
56
Compound 23b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
OO
TBDPSO OH17 6
5
432
1012
HN
OO
TBDPSO OH17 6
5
432
1012
![Page 57: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/57.jpg)
57
Compound 3a
1H NMR (500 MHz, CD3OD)
13C NMR (125 MHz, CD3OD)
HN
OH OH
HOOH
HCl
12
3 4 5
6 78
HN
OH OH
HOOH
HCl
12
3 4 5
6 78
![Page 58: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/58.jpg)
58
Compound 3b
1H NMR (500 MHz, D2O) spectrum of
13C NMR (125 MHz, D2O)
HN
OH OH
HOOH
HCl
12
3 4 5
6 78
HN
OH OH
HOOH
HCl
12
3 4 5
6 78
![Page 59: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/59.jpg)
59
Compound24
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
OMOM
O O
OEt
TBDPSO
O
OMOM
O O
OEt
TBDPSO
O
![Page 60: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/60.jpg)
60
Compound25
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
OMOM
O O
OEt
HO
O
OMOM
O O
OEt
HO
O
![Page 61: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/61.jpg)
61
Compound26
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
OMOM
O O
OEt
MsO
O
OMOM
O O
OEt
MsO
O
![Page 62: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/62.jpg)
62
Compound27
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
HO
OMOMMsO
O O
HO
OMOMMsO
![Page 63: Divergent synthesis of various iminocyclitols from D ... Divergent synthesis of various iminocyclitols from D-ribose Ramu Petakamsetty, Vipin Kumar Jain, Pankaj Kumar Majhi and Ramesh](https://reader031.vdocument.in/reader031/viewer/2022030617/5ae319ff7f8b9a595d8dfa2e/html5/thumbnails/63.jpg)
63
Compound28a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMOMMsO NCbz
OH
NHCbz
O O
OMOMMsO NCbz
OH
NHCbz
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Compound28b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
O O
OMOMOMs NCbz
NHCbz
OH
O O
OMOMOMs NCbz
NHCbz
OH
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Compound29a
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
O O
MOMO
OH1
234
5
6 7
1011
12
HN
O O
MOMO
OH1
234
5
6 7
1011
12
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66
Compound29b
1H NMR (500 MHz, CDCl3)
13C NMR (125 MHz, CDCl3)
HN
O O
MOMO
OH1
234
5
6 7
1011
12
HN
O O
MOMO
OH1
234
5
6 7
1011
12
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Compound4a
1H NMR (400 MHz, D2O) spectrum of
13C NMR (100 MHz, D2O) spectrum of compound4a
12
34
56
7 8HN
HO OH
HO
OH
12
34
56
7 8HN
HO OH
HO
OH
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68
Compound4b
1H NMR (400 MHz, D2O)
13C NMR (100 MHz, D2O)
12
34
56
7 8HN
HO OH
HO
OH
12
34
56
7 8HN
HO OH
HO
OH
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HPLC DATA
HPLC data of compound 10 (racemic)
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HPLC data of compound 10a
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HPLC data of compound 10b
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HPLC data of compound 17 (racemic)
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HPLC data of compound 17a
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HPLC data of compound 17b
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HPLC data of compound 22 (racemic)
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HPLC data of compound 22a
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HPLC data of compound 22b
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HPLC data of compound 28 (racemic)
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HPLC data of compound 28a
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HPLC data of compound 28b