Grignard reagent induced tandem semipinacol rearrangement/ketone addition reaction of 20S-hydroxy-5α-pregnane-16(17)-epoxide
作者:Chun-Xi Huang、Yong Shi、Jing-Rong Lin、Rong-Hua Jin、Wei-Sheng Tian
DOI:10.1016/j.tetlet.2011.05.122
日期:2011.8
A Grignard reagent induced tandem semipinacol rearrangement/chelation-controlled ketone addition process, which converts 20S-hydroxy-5α-pregnane-16(17)-epoxide into an unusual C20-substituted 17S-pregnane-3S,16R,20S-triol, is described.
Grignard试剂诱导串联半松果醇重排/螯合控制的酮添加过程,该过程将20 S-羟基-5α-孕烷-16(17)-环氧转化为不寻常的C20取代的17 S-孕烷3 S,16 R,20描述了S-三醇。