1,2,3,4-Tetrahydro-1,5-naphthyridines and related heterocyclic scaffolds: exploration of suitable chemistry for library development
作者:Grace H.C. Woo、Aaron B. Beeler、John K. Snyder
DOI:10.1016/j.tet.2007.04.003
日期:2007.6
The chemistry of 1,2,3,4-tetrahydro-1,5-naphthyridines and 2,3,4,5-tetrahydro-1H-pyrido[3,2-b] azepines has been explored with the goal of discovering reactions at N1 suitable for library development. Epoxide openings, Pd-catalyzed N-arylations, DEPBT-promoted acylations, and urea formation through the reaction with isocyanates were all successful. The epoxide opening chemistry using homochiral epichlorohydrin followed by epoxide reclosure and a second nucleophilic opening led to the preparation of a small 24-membered library. (C) 2007 Elsevier Ltd. All rights reserved.