Toddalenone: A new coumarin from Toddalia asiatica (T. aculeata). Structural establishment based on the chemical conversion of limettin into toddalenone.
作者:Hisashi Ishii、JunIchi Kobayashi、Tsutomu Ishikawa
DOI:10.1248/cpb.31.3330
日期:——
Toddalenone, a new coumarin, was isolated from Toddalia asiatica (L.) Lam. (T. aculeata Pers.). Its structure was established as the formula (1) by correlation with limettin (2). Vilsmeier-Haack formylation of limettin (2) gave 8-formyllimettin (10) in good yield. Aldol condensation of this material (10) with acetone afforded toddalenone (1).
从 Toddalia asiatica (L.) Lam.(T. aculeata Pers.)通过与利眠宁(2)的相关性,确定其结构为式(1)。利美丁(2)经 Vilsmeier-Haack 甲酰化后得到 8-formyllimettin(10),收率很高。将这种物质 (10) 与丙酮进行醛醇缩合,可得到托达烯酮 (1)。