Concise syntheses of the polyketide natural product (–)-muricatacin and (–)-( R , R )-L-factor (natural product enantiomer) were achieved in four steps by employing an organocatalytic asymmetric direct vinylogous aldol reaction of γ-crotonolactone and suitable aliphatic aldehydes as the key step.
聚酮化合物天然产物 (-)-muricatacin 和 (-)-( R , R )-L-因子(天然产物对映异构体)的简明合成是通过采用 γ-巴豆内酯和合适的脂肪醛作为关键步骤。
Highly Enantioselective Aldol Reaction with 2-Trimethylsilyloxyfuran: The First Catalytic Asymmetric Autoinductive Aldol Reaction