[EN] 2, 6-DISUBSTITUTED PYRIDINES AND 2, 4-DISUBSTITUTED PYRIMIDINES AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS [FR] PYRIDINES 2, 6-DISUBSTITUÉES ET PYRIMIDINES 2, 4-DISUBSTITUÉES EN TANT QU'ACTIVATEURS DE GUANYLATE CYCLASE SOLUBLE
New Synthetic Routes to 3-, 5-, and 6-Aryl-2-chloropyridines
摘要:
The efficient synthesis of 3-, 5-, and 6-aryl-2-chloropyridines via the facile preparation of 5-(dimethyamino)aryl-substituted pentadienyl nitriles and cyclization with hydro chloric acid is described. This approach allows for the introduction of other electron-withdrawing substituents on the pyridine ring as well as the preparation of the desired unsubstituted arylpyridines. Some differences in the rates of cyclization of the pentadienyl nitriles as well as the yields of chloropyridines were observed that depended on the position and degree of substitution in the aryl substituent. The arylpentadienyl nitriles 5 and 6 could also be converted directly into the corresponding 2-aminopyridines.
[EN] 2, 6-DISUBSTITUTED PYRIDINES AND 2, 4-DISUBSTITUTED PYRIMIDINES AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS<br/>[FR] PYRIDINES 2, 6-DISUBSTITUÉES ET PYRIMIDINES 2, 4-DISUBSTITUÉES EN TANT QU'ACTIVATEURS DE GUANYLATE CYCLASE SOLUBLE
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2009068652A1
公开(公告)日:2009-06-04
Disclosed are compounds of formula (I): wherein n represents 1 or 2; each R1 independently represents halo or trifluoromethyl; wherein halo represents fluoro, chloro or bromo; R2 represents hydrogen or C1-3alkyl; X represents N or CH; wherein -Z- represents a group selected from: (A), (B) or (C), wherein R3 represents trifluoromethyl or C1-3alkyl; and R4 represents hydrogen, trifluoromethyl or C1-3alkyl; with the proviso that where Z represents a thiophene group and X represents N, R2 cannot represent C1-3alkyl; and when X represents CH, -Z- can additionally represent a group selected from: (D) or (E) or salts thereof which activate soluble guanylate cyclase (sGC) pharmaceutical compositions containing them, their use is medicine, and processes for their preparation.
New Synthetic Routes to 3-, 5-, and 6-Aryl-2-chloropyridines
作者:Robert Church、Ronald Trust、J. Donald Albright、Dennis Powell
DOI:10.1021/jo00117a029
日期:1995.6
The efficient synthesis of 3-, 5-, and 6-aryl-2-chloropyridines via the facile preparation of 5-(dimethyamino)aryl-substituted pentadienyl nitriles and cyclization with hydro chloric acid is described. This approach allows for the introduction of other electron-withdrawing substituents on the pyridine ring as well as the preparation of the desired unsubstituted arylpyridines. Some differences in the rates of cyclization of the pentadienyl nitriles as well as the yields of chloropyridines were observed that depended on the position and degree of substitution in the aryl substituent. The arylpentadienyl nitriles 5 and 6 could also be converted directly into the corresponding 2-aminopyridines.