Cyclization mechanism of phomopsene synthase: mass spectrometry based analysis of various site-specifically labeled terpenes
作者:Sandip S Shinde、Atsushi Minami、Zhi Chen、Tetsuo Tokiwano、Tomonobu Toyomasu、Nobuo Kato、Takeshi Sassa、Hideaki Oikawa
DOI:10.1038/ja.2017.27
日期:2017.5
examined the cyclization mechanism of tetracyclicditerpene phomopsene with phomopsene synthase. A detailed EI-MS analysis of phomopsene labeled at various positions allowed us to propose the structures corresponding to the most intense peaks, and thus elucidate a cyclization mechanism involving double 1,2-alkyl shifts and a 1,2-hydride shift via a dolabelladien-15-yl cation. Our study demonstrated that