作者:Vasudev R. Bhonde、Ryan E. Looper
DOI:10.1021/ja2098063
日期:2011.12.21
stereoselective total synthesis of (+)-saxitoxin is described. A silver(I)-initiated hydroamination cascade constructs the bicyclic guanidinium ion core from a alkynyl bisguanidine. This sequence creates two C-N bonds, one C-O bond, and three rings and forms a single stereoisomer in a single synthetic transformation. This process enabled us to complete the synthesis of (+)-saxitoxin in 14 steps from
描述了 (+)-石房蛤毒素的简明立体选择性全合成。银 (I) 引发的氢胺化级联从炔基双胍构建双环胍离子核心。该序列产生两个 CN 键、一个 CO 键和三个环,并在单一合成转化中形成单一立体异构体。该工艺使我们能够从N-Boc-l-丝氨酸甲酯通过14步完成(+)-石房蛤毒素的合成。