Regio- and enantioselective catalytic epoxidation of conjugated polyenes. Formal synthesis of LTA4 methyl ester
摘要:
The (salen)Mn(III)-catalyzed asymmetric epoxidation reaction exhibits regioselectivity for attack at cis double bonds of conjugated dienes to afford enantiomerically enriched trans-vinyl epoxides as the major products.
Regio- and enantioselective catalytic epoxidation of conjugated polyenes. Formal synthesis of LTA4 methyl ester
摘要:
The (salen)Mn(III)-catalyzed asymmetric epoxidation reaction exhibits regioselectivity for attack at cis double bonds of conjugated dienes to afford enantiomerically enriched trans-vinyl epoxides as the major products.
Antimicrobial stress compounds from Hypochoeris radicata
作者:Y Maruta
DOI:10.1016/0031-9422(94)00792-r
日期:1995.3
The exudates of Hypochoeris radicata leaves stressed with cupric chloride afforded two eudesmane- and guaiane-type sesquiterpenes, and two alkenals, (2E,4E)-6-hydroxyhexadienal and (2E,4E)-hexadienedial (mucondialdehyde). Their structures were determined by spectroscopic and synthetic methods.