A new approach to the synthesis of podophyllotoxin based on epimerization reactions
作者:Manuel Medarde、Angel C. Ramos、Esther Caballero、Jose Luis López、Rafael Peláez-Lamamiéde Clairac、Arturo San Feliciano
DOI:10.1016/0040-4039(96)00355-3
日期:1996.4
A formal synthesis of podophyllotoxin has been achieved by means of the well known conjugate addition-alkylation of 5H-furan-2-one, followed by cyclization and controlled epimerizations. This approach represents a useful new route to the 8,7′-trans-stereochemistry of aryltetralin lactones, that in other methodologies requires the opening and reclosure of the lacton ring.
鬼臼毒素的正式合成已经通过众所周知的5 H-呋喃-2-酮的共轭加成-烷基化,然后进行环化和受控差向异构化来实现。该方法代表了实现芳基四氢内酯的8,7'-反式-立体化学的有用新途径,在其他方法中,该方法需要打开和重新封闭内酯环。