Microbiological enantioselective transformation of 4, 9-dimethyl-3, 5-dioxo-Δ4(10)-octalin, (±)-1 was accomplished with various yeasts, e.g. Rhodotorula rubra. With properly selected microorganisms, (+)-4, 9S-dimethyl-5S-hydroxy-(2a) and (-)-4, 9R-dimethyl-5S-hydroxy-3-oxo-Δ4(10)-octalin (3b), (-)-4, 9R-dimethyl-3S-hydroxy- (6b) and (+)-4, 9S-dimethyl-3S-hydroxy-5-oxo-Δ4(10)-octalin (7a) were obtained with high optical purity.These compounds have now become available for the total syntheses of sesquiterpenoids such as tuberiferine and temisin.
利用各种酵母,例如红酵母(Rhodotorula rubra),完成了 4,9-二甲基-3,5-二氧代-Δ4(10)-辛卡林,(±)-1 的微
生物对映体选择性转化。通过适当选择的微
生物,可以得到(+)-4,9S-二甲基-5S-羟基-(2a)和(-)-4,9R-二甲基-5S-羟基-3-氧代-Δ4(10)-
辛烯苷(3b)、(-)-4,9R-二甲基-3S-羟基-(6b)和(+)-4,9S-二甲基-3S-羟基-5-氧代-Δ4(10)-辛卡林(7a)获得了高光学纯度。这些化合物现已可用于
倍半萜类化合物(如块茎蕨碱和替米辛等)的全合成。