Abstract
The spiroacetal [C(9)–C(20)] fragments of spirofungins A and B, antibiotics isolated from Streptomyces violaceusniger Tü 4113, were prepared from a known bromo alcohol derived from (S)-citronellal, using thermodynamically controlled iodolactonization and spiroacetalization as the key steps.
摘要:从(S)-香茅醛衍生的一种溴醇出发,利用热力学控制的碘内酯化和螺环缩醛化作为关键步骤,制备了从紫色链霉菌Tü 4113中分离的抗生素螺环霉素A和B的螺环缩醛[C(9)-C(20)]片段。