Extractives from Guttiferae. Part XIX. The isolation and structure of two benzophenones, six xanthones and two biflavonoids from the heartwood of Allanblackia floribunda Oliver
作者:H. D. Locksley、I. G. Murray
DOI:10.1039/j39710001332
日期:——
4′,5′-dihydro-1,6,7-trihydroxy-4′,4′,5′-trimethylfurano(2′,3′ : 3,4)xanthone, volkensiflavone, morelloflavone; and from methylation of the crude extracts, 1,7-dimethoxyxanthone, 1-hydroxy-5-methoxyxanthone, 1-hydroxy-3,7-dimethoxy-2-(3,3-dimethylallyl)xanthone, and 1,3,6,7-tetramethoxyxanthone have been isolated from the heartwood of Allanblackia floribunda Oliver. The biogenetic significance of the
十种代谢产物,水母蛋白(2-羟基-4,6-二甲氧基二苯甲酮),2,3'-二羟基-4,6-二甲氧基二苯甲酮,1,3,5-三羟基黄酮,4',5'-二氢-1,6,7 -三羟基-4',4',5'-三甲基呋喃酮(2',3':3,4)蒽酮,Volsifslavlavone,莫乐黄酮; 从粗提物的甲基化反应中,得到1,7-二甲氧基黄酮,1-羟基-5-甲氧基黄酮,1-羟基-3,7-二甲氧基-2-(3,3-二甲基烯丙基)黄酮和1,3,6, 7-四甲氧杂蒽酮已从多花Allanblackia floribunda Oliver的心材中分离出来。讨论了这些化合物共存的生物遗传学意义,并描述了水co,甲基水hydro和2,3',4,6-四甲氧基二苯甲酮的合成。