Models of folate cofactors - 23. A synthetic strategy to the aspidosperma skeleton. Synthesis of the 21-epimer of 20-deethyl-3,17-dioxo-16-ethoxycarbonyl-1-methylaspidospermidine.
作者:R.H Huizenga、J van Wiltenburg、H Bieräugel、U.K Pandit
DOI:10.1016/s0040-4020(01)86453-x
日期:1991.1
late models and amines furnish enaminones. The enaminones react with acid chlorides to give enamidones, which can be cyclized by Lewis acids to 2-oxopyrrolo[2,3-d]carbazoles or 1′-carbonyl-pyrrolo[2,3-d]carbazoles. The influence of both the location of the amide carbonyl (in the enamidone) and the Lewis acids on the stereochemical outcome of the cyclization reaction is discussed. The approach has been
N(5),N(10)-亚甲基四氢叶酸模型与胺之间的碳碎片转移反应提供了烯胺酮。烯胺酮与酰氯反应生成烯mid酮,其可以被路易斯酸环化为2-氧代吡咯并[2,3-d]咔唑或1'-羰基-吡咯并[2,3-d]咔唑。讨论了酰胺羰基(在烯酮中)的位置和路易斯酸对环化反应的立体化学结果的影响。该方法已应用于标题化合物的合成。