Synthesis and Cyclization of a Proposed Biosynthetic Epoxy Intermediate of a Marine Monocyclic Ether Amide, Brevisamide
作者:Masayuki Satake、Tomohiro Shirai、Yuki Takimoto、Takefumi Kuranaga、Kazuo Tachibana、Daniel G. Baden、Jeffrey L. C. Wright
DOI:10.3987/com-13-12880
日期:——
Proposed biosynthetic intermediates of a marine monocyclic ether alkaloid, brevisamide (1) were synthesized for biosynthetic studies on the marine ladder-frame polyethers. The intermediates comprising a linear backbone with trans-olefin (2) and epoxide (3) functionality were synthesized via a Suzuki-Miyaura cross coupling reaction and a Katsuki Sharpless asymmetric epoxidation reaction. In protic solvents, 3 was unstable and readily cyclized to an unnatural 5-membered ether ring compound (4).