Asymmetric Synthesis of 2-Substituted Dihydrobenzofurans and 3-Hydroxydihydrobenzopyrans through the Enantioselective Epoxidation of O-Silyl-Protected ortho-Allylphenols
作者:Hang Jiang、Takaya Sugiyama、Akinari Hamajima、Yasumasa Hamada
DOI:10.1002/adsc.201000505
日期:2011.1.10
The Shi‐type epoxidation of O‐tert‐butyldiphenylsilyl (TBDPS) protected o‐allylphenols serves as an efficient strategy to construct the dihydrobenzofurans and dihydrobenzopyrans in up to 97% ee. This methodology led to the enantioselective synthesis of (+)‐marmesin, (−)‐(3′R)‐decursinol, and (+)‐lomatin.
的施型环氧化ø -叔丁基二苯基硅烷基(TBDPS)保护ø -allylphenols作为有效的策略来构建二氢苯并呋喃和dihydrobenzopyrans在高达97%的ee值。这种方法导致了(+)的对映选择性合成- marmesin,( - ) - (3' - [R)-decursinol,和(+) - lomatin。