An unusual reaction of flavan-3-ols with acetone of relevance to the formation of the tetracyclic ring system in peltogynoids
作者:Jan H. Van Der westhuizen、Jacobus A. Steenkamp、Daneel Ferreira
DOI:10.1016/s0040-4020(01)90082-1
日期:1990.1
Flavan-3-ols are in moist acetone subject to acid-catalyzed incorporation of an 1-methylethylidene fragment between 3-OH and C-2 (B-ring) to give a tetracyclic ring system reminiscent of the peltogynoid series of flavonoids.