作者
Serge Lavoie, André Pichette, François-Xavier Garneau, Michel Girard, Daniel Gaudet
发表日期
2001/1/1
期刊
Synthetic Communications
卷号
31
期号
10
页码范围
1565-1571
出版商
Taylor & Francis Group
简介
Betulin–allobetulin transformation is effected with ferric nitrate or ferric chloride adsorbed onto silica gel or alumina, in excellent yields. In addition, allobetulin can be converted to allobetulone with silica adsorbed ferric nitrate or to 19β,28- epoxy-A-neo-18α-olean-3(5)-ene and 19β,28-epoxy-A-neo-5β-methyl-25-nor-18α-olean-9-ene with silica or alumina adsorbed ferric chloride.
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S Lavoie, A Pichette, FX Garneau, M Girard, D Gaudet - Synthetic Communications, 2001