The proton-to-deuterium exchange reaction of the hydrogenatom at the 5-position of 15 pyrimidinederivatives has been studied. The exchange proceeds under both acidic and alkaline conditions. Under acidic conditions, the mechanism involves protonation at the 5-position (forming an σ complex), whereas under alkaline conditions the exchange is mainly a result of the formation of a tautomeric equilibrium
2,4-Diamino-5-benzylpyrimidines as antibacterial agents. 4. 6-Substituted trimethoprim derivatives from phenolic Mannich intermediates. Application to the synthesis of trimethoprim and 3,5-dialkylbenzyl analogs
作者:Barbara Roth、Edward Aig、Kenneth Lane、Barbara S. Rauckman
DOI:10.1021/jm00179a012
日期:1980.5
The preparation of a wide variety of 6-substituted trimethoprim analogues was readily accomplished by the reaction of 2,4-diamino-6-substituted-pyrimidines with 2,6-dimethoxy-4-[(N,N-dimethylamino)methyl]phenol at 120--160 degrees C. The less reactive 2,6-dialkyl-4-[(N,N-dimethylamino)methyl]phenols reacted successfully with 2,4-diamino-6-(alkylthio)pyrimidines to give 5-(substituted benzyl)pyrimidines
Pyrimido[5,4-e][1,2,4]triazine-5,7-diamine compounds as protein tyrosine phosphatase inhibitors
申请人:Hoffman-La Roche Inc.
公开号:US06642381B2
公开(公告)日:2003-11-04
The invention relates to pyrimido[5,4-e][1,2,4]triazine-5,7-diamine compounds which are useful for inhibiting protein tyrosine phosphatases, particularly PTP1B.
Identification of a novel class of orally active pyrimido[5,4-3][1,2,4]triazine-5,7-diamine-based hypoglycemic agents with protein tyrosine phosphatase inhibitory activity
作者:Kevin R. Guertin、Lina Setti、Lida Qi、Rachel M. Dunsdon、Brian W. Dymock、Philip S. Jones、Hilary Overton、Mathew Taylor、Glyn Williams、Joseph A. Sergi、Karen Wang、Ying Peng、Marcia Renzetti、Rogely Boyce、Fiorenza Falcioni、Ralph Garippa、Andrée R. Olivier
DOI:10.1016/s0960-894x(03)00623-1
日期:2003.9
A novel series of orally active pyrimido[5,4-3][1,2,4]triazine-5,7-diamine-based hypoglycemic agents have been identified. These compounds show non-selective inhibitory properties against a panel of protein tyrosine phosphatases including PTP1B. Compounds 12 and 13 display oral glucose lowering effects in ob/ob mice. (C) 2003 Elsevier Ltd. All rights reserved.