来自蝶形花科植物长柄荚的新型3-羟基黄烷酮（二氢黄酮醇）植保素。

New 3-hydroxyflavanone (dihydroflavonol) phytoalexins from the papilionate legume Shuteria vestita.

作者信息

Ingham J L, Tahara S, Dziedzic S Z

出版信息

J Nat Prod. 1986 Jul-Aug;49(4):631-8. doi: 10.1021/np50046a012.

Abstract

Diffusates from the fungus-inoculated leaflets of Shuteria vestita have yielded four novel 3-hydroxyflavanone (dihydroflavonol) phytoalexins. From spectroscopic and chemical evidence, three of these phytoalexins have been identified as (2R,3R,2''R)--3,5,4'-trihydroxy-2'-isopropenyldihydrofurano (4'',5''; 6,7) flavanone (shuterol,1), (2R,3R)--3,5,7,4'-tetrahydroxy-6-(3,3-dimethylally) flavanone (shuterin, 2), and (2R,3R,2''R)--3,5,2',4'-tetrahydroxy-2''-isopropenyldihydrofurano (4'',5''; 6,7)flavanone (shuterone A, 3). The fourth compound (shuterone B, 4) is considered to be the 2S,3R stereoisomer of shuterone A.

摘要

来自被真菌接种的华南排钱树叶的扩散物产生了四种新型的3-羟基黄烷酮（二氢黄酮醇）植保素。根据光谱和化学证据，其中三种植保素已被鉴定为(2R,3R,2''R)--3,5,4'-三羟基-2'-异丙烯基二氢呋喃并(4'',5''; 6,7)黄烷酮（排钱树醇，1）、(2R,3R)--3,5,7,4'-四羟基-6-(3,3-二甲基烯丙基)黄烷酮（排钱树素，2）和(2R,3R,2''R)--3,5,2',4'-四羟基-2''-异丙烯基二氢呋喃并(4'',5''; 6,7)黄烷酮（排钱树酮A，3）。第四种化合物（排钱树酮B，4）被认为是排钱树酮A的2S,3R立体异构体。