乙状豆素J和K，两种从弯叶刺桐中分离得到的新的异戊烯基化异黄酮。
Sigmoidins J and K, two new prenylated isoflavonoids from Erythrina sigmoidea.
作者信息
Nkengfack A E, Vouffo T W, Vardamides J C, Fomum Z T, Bergendorff O, Sterner O
机构信息
Department of Organic Chemistry, University of Yaoundé, Cameroon.
出版信息
J Nat Prod. 1994 Aug;57(8):1172-7. doi: 10.1021/np50110a008.
In addition to the two known compounds neotautenol [2] and erythrinassinate B [4], two new compounds, an isoflavanone named sigmoidin J [1] and a coumestan derivative named sigmoidin K [3], have been isolated and characterized from the root bark of the Cameroonian medicinal plant Erythrina sigmoidea. Their structures have been established as 7, 4'-dihydroxy-2',5'-dimethoxy-6'(gamma, gamma-dimethylally)isoflavanone [1] and 3,9-dihydroxy-2,10-(gamma, gamma dimethylallyl) coumestan [3], respectively, by spectroscopic techniques and from chemical evidence.
除了两种已知化合物新互叶豆醇[2]和刺桐酸酯B[4]外，还从喀麦隆药用植物镰状刺桐的根皮中分离并鉴定出两种新化合物，一种名为乙状结肠素J[1]的异黄酮和一种名为乙状结肠素K[3]的香豆雌酚衍生物。通过光谱技术和化学证据，它们的结构分别确定为7,4'-二羟基-2',5'-二甲氧基-6'(γ,γ-二甲基烯丙基)异黄酮[1]和3,9-二羟基-2,10-(γ,γ-二甲基烯丙基)香豆雌酚[3]。
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