Toddalenone: A new coumarin from Toddalia asiatica (T. Aculeata). Structural establishment based on the chemical conversion of limettin into toddalenone
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). Vilsmeir-Haack formylation of limettin (2) gave 8-formyllimettin (10) in good yield. Aldol condensation of this material (10) with acetone afforded toddalenone (1).
Ishii,Kobayashi,Ishikawa
p. 3330 - 3333
(2007/10/02)
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