Total synthesis of (−)-dysibetaine via a nitrenium ion cyclization–dienone cleavage strategy
作者:Duncan J. Wardrop、Matthew S. Burge
DOI:10.1039/b403081h
日期:——
The diastereoselective total synthesis of the marine natural product (-)-dysibetaine is reported. The key steps in this venture are i) a diastereoselective nitrenium ion spirocyclization, which serves to generate the pyrrolidinone ring and quaternary stereocenter of the target, and ii) use of the 2-methoxycyclohexa-2,5-dienone ring formed during cyclization as a masked 2-amino-1,3-dicarbonyl synthon
据报道,海洋天然产物(-)-dysibetaine的非对映选择性全合成。该合资企业的关键步骤是:i)非对映选择性氮离子螺环化,用于生成吡咯烷酮环和靶标的季立体中心; ii)使用环化过程中形成的2-甲氧基环己-2,5-二烯酮环作为掩蔽的2-氨基-1,3-二羰基合成子。