Synthesis of (−)-Tetrodotoxin: Preparation of an Advanced Cyclohexenone Intermediate
作者:Douglass F. Taber、Pierre H. Storck
DOI:10.1021/jo0301189
日期:2003.10.1
The preparation of an advanced intermediate toward the enantioselective synthesis of tetrodotoxin is outlined. The enantiomerically pure cyclopentene 15 was generated from ketone 14 by alkylidene carbene insertion with retention of absolute configuration. An ozonolysis/aldol sequence first produced the trans cyclohexenone, which upon epimerization gave the more stable cis enone 18.
概述了对河豚毒素的对映选择性合成的高级中间体的制备。对映体纯的环戊烯15是由酮14通过亚烷基卡宾插入而保留绝对构型而产生的。臭氧分解/羟醛序列首先产生反式环己烯酮,其在差向异构化时给出更稳定的顺式烯酮18。