Total synthesis of pederin, a potent insect toxin: the efficient synthesis of the right half, (+)-benzoylpedamide
作者:Takahiro Takemura、Yoshinori Nishii、Shunya Takahashi、Jun'ichi Kobayashi、Tadashi Nakata
DOI:10.1016/s0040-4020(02)00635-x
日期:2002.8
A simple and efficient synthesis of (+)-benzoylpedamide, the right half of pederin, was achieved in 16 steps with a 35% overall yield from (S)-malic acid. The key steps include the SmI2-mediated intramolecular Reformatsky reaction, stereoselective allylation, the Sharpless asymmetric dihydroxylation, and amidation. The total synthesis of pederin was accomplished via coupling of the left and right halves
分16步完成了简单有效的合成(+)-苯甲酰pedamide(pederin的右半部分)的操作,从(S)-苹果酸的总收率达到35%。关键步骤包括SmI 2介导的分子内Reformatsky反应,立体选择性烯丙基化,Sharpless不对称二羟基化和酰胺化。pederin的总合成是通过左右两半的偶联完成的。