3-Acylindoles as versatile starting materials for pyridine ring annulation: synthesis of 1-deazapurine isosteres
摘要:
The reaction of electron-rich aminoheterocycles with 3-acyl- and 3-formylindoles results in indole ring opening and cyclocondensation to give heteroannulated pyridines, which can be regarded as purine isosteres. The transformations reported herein represent rare examples of domino reactions, which include the cleavage of an indole moiety. (C) 2011 Elsevier Ltd. All rights reserved.