Isolation of [4-O-4]-linked biflavanoids from Acacia melanoxylon: first examples of a new class of single ether-linked proanthocyanidin dimers
作者:Lai Yeap Foo
DOI:10.1039/c39890001505
日期:——
(5) and the isomeric 2,3-cis-3,4-trans-3,3′,4′,7,8-pentahydroxyflavan-[4-O-4]-2,3-cis-3,4-cis-3,3,4′,7,8-pentahydroxyflavan (6), from the heartwood of Acacia melanoxylon further extends the heterogeneity of the interflavanoid linkage among natural proanthocyanidin dimers and oligomers.
独特的[4-0-4]-连接的双黄酮类化合物[4-O-4] -bis(2,3-顺-3,4-反-3,3',4',7,8-五羟基黄烷)(5)和异构体2,3-顺-3,4-反-3,3',4',7,8-五羟基黄烷-[4-O-4] -2,3-顺-3,来自黑合欢(Acacia melanoxylon )心材的4-顺式-3,3,4',7,8-五羟基黄烷(6)进一步扩展了天然原花青素二聚体和低聚物之间黄酮间键合的异质性。