Isocytosine H2-receptor histamine antagonists. IV. The synthesis and biological activity of donetidine (SK&F 93574) and related compounds
摘要:
The synthesis and biological activity of some novel 2-amino-4-pyrimidone derivatives is described. Side-chains associated with H-2-antagonist activity am attached through the 2-amino group, whilst a range of 2-hydroxypyridine containing moieties are substituted at the 5-position of the pyrimidone ring. Good H-2-receptor histamine antagonist activity is observed with all the series and the majority of the compounds are selective for the H-2-receptor. High aqueous solubility and iv potency coupled with an extended duration of biological activity in animal models led to compound 16c, 2-[2-(5-dimethylaminomethyl-2-furanylmethyl-thio)ethylamino]-5-(2-hydroxypyrid-4-ylmethyl)-4-pyrimidone (donetidine, SK&F 93574) being selected for clinical investigation as a potential parenterally administered therapeutic agent.
The compounds are substituted 2-amino-4-pyrimidones with a 5-(hydroxypyridylalkyl) substituent which are histamine H.sub.2 -antagonists. Two specific compounds are 2-[2-(3-bromo-2-pyridylmethylthio)ethylamino]-5-(2-hydroxy-4-pyridylmethyl )-4-pyrimidone and 2-[4-(3-methoxy-2-pyridyl)butylamino]-5-(2-hydroxy-4-pyridylmethyl)-4-pyri midone.
2-nitro aminopyrimidone derivatives, a process for their preparation and their use to prepare 2-aminopyrimidone derivatives which have histamine H2-antagonist activity
申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0004793B1
公开(公告)日:1981-12-30
BROVN, TH.;DURANT, G. J.;CANELLIN, CH. R.;IFE, R. J.
作者:BROVN, TH.、DURANT, G. J.、CANELLIN, CH. R.、IFE, R. J.
DOI:——
日期:——
Pyrimidone derivatives, process for preparing them and pharmaceutical compositions containing them