An Efficient Synthesis of Pyrrolo[2,3-<i>d</i>]pyrimidines via Inverse Electron Demand Diels−Alder Reactions of 2-Amino-4-cyanopyrroles with 1,3,5-Triazines
作者:Qun Dang、Jorge E. Gomez-Galeno
DOI:10.1021/jo026309d
日期:2002.11.1
The scope of the inverse electron demand Diels-Alder reaction of 2-amino-4-cyanopyrroles (3a-e) with 1,3,5-triazines (1, 2) is reported. This methodology is suitable for one-pot syntheses of highly substituted and highly functionalized pyrrolo[2,3-d]pyrimidines that are the central heterocyclic nucleus of various nucleoside natural products such as toyocamycin, sangivamycin, and tubercidin.
报道了2-氨基-4-氰基吡咯(3a-e)与1,3,5-三嗪(1、2)的电子反需求Diels-Alder反应的范围。这种方法学适用于一锅合成高度取代和高度官能化的吡咯并[2,3-d]嘧啶,吡咯并[2,3-d]嘧啶是各种核苷天然产物(如Toyocamycin,sangivamycin和tubercidin)的中心杂环核。