名称:
Exploitation of a new route to fused pyrroles: Synthesis of TNP-351, homo-MTA and 5-arylpyrrolo[2,3-]pyrimidines
摘要:
We have developed a new methodology for the construction of pyrrolo[2,3-d]pyrimidines that involves Michael addition of 2,6-diamino-4(3 (H) under bar)-pyrimidinone or 2,4,6-triaminopyrimidines to nitroolefins, followed by a Nef reaction of the resulting adduct to form an intermediate aldehyde that spontaneously cyclizes to the fused pyrrole ring, This methodology has been exploited in a new synthesis of TNP-351, and for the first reported preparation of homo-MTA and of a series of 5-arylpyrrolo[2,3-(d) under bar]pyrimidines. (C) 1999 Elsevier Science Ltd. All rights reserved.