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2001 terpenes terpenes U 0200 38 - 173 Regiospecific and Stereoselective Ene Reaction of the A-Ring Methyl- cyclohexene Moiety of Polycyclic Terpenoid Systems with Dimethyl Acetylenedicarboxylate. — Polycyclic terpenoid compounds having a methylcyclohexene moiety at the A-ring such as (IV) and (VIII) undergo regio- and stereoselective ene reactions when heated with acetylenedicarboxylate (V). The ene-reaction products (VI) and (IX) show promising antifungal properties. — (ABAD, ANTONIO; AGULLO, CONSUELO; CUNAT, ANA C.; NAVARRO, ISMAEL; RAMIREZ DE ARELLANO, CARMEN; J. Chem. Res., Synop. (2001) 3, 90-91; Dep. Quim. Org., Univ. Valencia, E-46100 Burjassot, Valencia, Spain; EN) 1

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Page 1: ChemInform Abstract: Regiospecific and Stereoselective Ene Reaction of the A-Ring Methylcyclohexene Moiety of Polycyclic Terpenoid Systems with Dimethyl Acetylenedicarboxylate

2001 terpenes

terpenesU 0200

38 - 173Regiospecific and Stereoselective Ene Reaction of the A-Ring Methyl-cyclohexene Moiety of Polycyclic Terpenoid Systems with DimethylAcetylenedicarboxylate. — Polycyclic terpenoid compounds having amethylcyclohexene moiety at the A-ring such as (IV) and (VIII) undergo regio-and stereoselective ene reactions when heated with acetylenedicarboxylate(V). The ene-reaction products (VI) and (IX) show promising antifungalproperties. — (ABAD, ANTONIO; AGULLO, CONSUELO; CUNAT, ANAC.; NAVARRO, ISMAEL; RAMIREZ DE ARELLANO, CARMEN; J. Chem.Res., Synop. (2001) 3, 90-91; Dep. Quim. Org., Univ. Valencia, E-46100Burjassot, Valencia, Spain; EN)

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