4-Phenyl-9,9a-dihydro-5,6-benzoisoindolines, e.g. those of the formula ##STR1## OR SALTS THEREOF ARE ANTIASTHMATIC AND ANTIALLERGIC AGENTS.
4-苯基-9,9a-二氢-5,6-苯并异喹啉,例如式##STR1##或其盐是抗哮喘和抗过敏药物。
US4014899A
申请人:——
公开号:US4014899A
公开(公告)日:1977-03-29
General Approach to 2,3-Dibenzyl-γ-butyrolactone Lignans: Application to the Total Synthesis of (±)-5′-Methoxyyatein, (±)-5′-Methoxyclusin, and (±)-4′-Hydroxycubebinone
作者:Prashanth K. Amancha、Hsing-Jang Liu、Tai Wei Ly、Kak-Shan Shia
DOI:10.1002/ejoc.201000318
日期:——
The totalsynthesis of natural lignans 5′-methoxyyatein (1), 5′-methoxyclusin (2), and 4′-hydroxycubebinone (3), in racemic form, has been achieved by a newly developed strategy, wherein lithium naphthalenide induced decyanation was employed as a key operation to establish the essential trans configuration of the butyrolactone ring.