作者:Keisuke Araki、Kiyotake Suenaga、Tetsuya Sengoku、Daisuke Uemura
DOI:10.1016/s0040-4020(02)00056-x
日期:2002.3
enantioselective synthesis of attenols A and B, cyclic polyethers of marine origin, was accomplished on a semigram scale by using diastereoselective hydroboration, coupling with lithium acetylide, Lindlar reduction and acid-catalyzed acetal formation. The configuration of the remaining undetermined spiro acetal carbon was unambiguously determined to be 11S using this ample supply of attenol A. The antitumor
对映体A和B,海洋来源的环状聚醚的对映选择性合成,是通过使用非对映选择性氢硼化,与乙炔锂偶联,Lindlar还原和酸催化的缩醛形成,以半克级完成的。剩余的未确定螺缩醛碳的构型被清楚地确定为11小号使用attenol A的这个供应充足合成attenol A的抗肿瘤活性也进行了研究。