Synthesis of pyrrolidin-3-ones from dihydropyran precursors via spiro-N,O-acetals
作者:Jeremy Robertson、Andrew J. Tyrrell、Praful T. Chovatia、Sarah Skerratt
DOI:10.1016/j.tetlet.2009.10.018
日期:2009.12
pyrrolidin-3-ones are prepared in three steps from simple dihydropyran derivatives; the key spiro-N,O-acetal intermediate is a useful N-sulfonylketoiminium ion precursor. This route represents a formal synthesis of the indolizidine alkaloid core, with potential application to pyrrolizidines and quinolizidines.
由简单的二氢吡喃衍生物可分三步制备2,2-二取代的吡咯烷-3-酮。关键的螺-N,O-乙缩醛中间体是有用的N-磺酰基酮亚胺离子前体。该途径代表吲哚并立核生物碱核心的正式合成,并有可能应用于吡咯并立核苷和喹啉并立核苷。