A convergent synthesis of the macrolactone core of amphidinolactone A has been achieved, in a 10 step linear sequence with 32% overall yield, through a ring-closing metathesis reaction as the macrolactonization step. The RCM precursor was obtained by the union of acid and alcohol fragments derived from (R)-epichlorohydrin and (R)-2,3-O-isopropylidene glyceraldehyde, respectively.
通过作为大内酯化步骤的闭环偏合成反应,以 10 步线性顺序实现了两性内酯 A 的大内酯核心的聚合合成,总收率为 32%。RCM 前体是由(R)-
环氧氯丙烷和(R)-2,3-O-异亚丙基
甘油醛分别衍生的酸和醇片段结合而成。