Resolution and Utilization of Ethyl 5-Hydroxycyclopent-1-enecarboxylate: Enantioselective Synthesis of (+)-Mitsugashiwalactone and (-)-Dolichodial
作者:Takahiro Yamane、Michiyasu Takahashi、Kunio Ogasawara
DOI:10.1055/s-1995-3930
日期:1995.4
Optically pure ethyl 5-hydroxycyclopent-1-enecarboxylate has been obtained with its acetate in both enantiomeric forms in excellent optical yields from racemic ethyl 5-hydroxycyclopent-1-enecarboxylate by lipase-mediated kinetic resolution. The optically pure (R)-enantiomer thus obtained has been transformed into two naturally occurring iridoid monoterpenes, (+)-mitsugashiwalactone and (-)-dolichodial.
光学纯的乙基5-羟基环戊-1-烯羧酸酯已通过脂肪酶介导的动力学分辨率,从外消旋乙基5-羟基环戊-1-烯羧酸酯中以优异的光学产率获得其醋酸酯的两种对映异构体。因此获得的光学纯(R)对映体已转化为两种天然存在的紫杉醇单萜,(+)-三叶紫杉醇内酯和(-)-多利克醛。