Regio- and Stereoselective Stevens Rearrangement of Benzyltetrahydroprotoberberinium Salts
作者:Maria Valpuesta、Amelia Diaz、Rafael Suau、Gregorio Torres
DOI:10.1002/ejoc.200400443
日期:2004.11
8-(Arylmethyl)berbines are conveniently obtained through a Stevens rearrangement of the corresponding N-arylmethylberbinium salts with sodium methylsulfinylmethylide in DMSO. This procedure has provided two new nonnatural 8-benzylcanadines stereoselectively, without competition from the Hofmann elimination. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
8-(芳甲基)小檗碱可以通过相应的N-芳甲基小檗盐与甲基亚磺酰基甲基化钠在DMSO中的Stevens重排方便地获得。该过程提供了两种新的非天然 8-苄基卡那丁立体选择性,没有来自霍夫曼消除的竞争。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)