Synthesis of (−)-pericosine B, the antipode of the cytotoxic marine natural product
作者:Yoshihide Usami、Kentaro Suzuki、Koji Mizuki、Hayato Ichikawa、Masao Arimoto
DOI:10.1039/b813072h
日期:——
The stereoselective synthesis of (−)-pericosine B, which is the antipode of the cytotoxic metabolite of the fungus Periconia byssoides OUPS-N133 separated from the sea hare, was accomplished in 9 steps in 12% total yield from (−)-quinic acid, together with the synthesis of its epimer. Every crucial step of this total synthesis, including ring opening of a β-epoxide and NaBH4reduction of an unstable
与海兔分离的真菌(Periconia byssoides OUPS-N133)的细胞毒性代谢产物的对映体(-)-pericosine B的立体选择性合成以9步完成,从(-)-奎宁酸的总收率为12% ,连同其差向异构体的合成。整个合成过程中的每个关键步骤,包括β-环氧化物的开环和不稳定的β,γ-不饱和烯酮的NaBH 4还原,都具有出色的立体选择性。