Synthetic studies on fully substituted γ-pyrone-containing natural products: The first total synthesis of onchitriol II
作者:Hirokazu Arimoto、Shigeru Nishiyama、Shosuke Yamamura
DOI:10.1016/0040-4039(94)88516-8
日期:1994.12
The first total synthesis of onchitriol II, a cytotoxic metabolite of mollusc Onchidium sp., is described. It employs mild cyclization method [DMSO - (COCl)2 or Ph3P - CCl4] of triketides bearing optically active functional groups to the corresponding γ-pyrones as a key step. Additional synthesis of some diastereoisomers provided a possibility to revise the structure of closely related onchitriol I.
描述了甲壳三醇II(一种软体动物Onchidium sp。的细胞毒性代谢产物)的第一个全合成。它采用温和的环化方法[DMSO-(COCl)2或Ph 3 P-CCl 4 ],将带有光学活性官能团的三酮化合物与相应的γ-吡喃酮类化合物结合在一起,作为关键步骤。一些非对映异构体的额外合成提供了修改紧密相关的甲壳三酚I结构的可能性。