A Brief and Convergent Synthetic Route to Defucogilvocarcin M Chromophore: The Formal Synthesis of WS-5995 A and C
作者:Asit Patra、Pallab Pahari、Sutapa Ray、Dipakranjan Mal
DOI:10.1021/jo0512960
日期:2005.10.1
Densely substituted styryl sulfone 20 is shown to undergo double annulation with phthalide 21 to give, in one-pot operation and in excellent yield, the benzonaphthopyranone scaffold 22 of gilvocarcins.