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.
[EN] ECTONUCLEOTIDE PYROPHOSPHATASE/PHOSPHODIESTERASE 1 (ENPP1) MODULATORS AND USES THEREOF<br/>[FR] MODULATEURS D'ECTONUCLÉOTIDES PYROPHOSPHATASES/PHOSPHODIESTÉRASES 1 (ENPP1) ET LEURS UTILISATIONS
申请人:SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INST
公开号:WO2021133915A1
公开(公告)日:2021-07-01
Provided herein are small molecule modulators of ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1), compositions comprising the compounds, and methods of using the compounds and compositions comprising the compounds.
General Access to <i>C</i>-Centered Radicals: Combining a Bioinspired Photocatalyst with Boronic Acids in Aqueous Media
作者:Maheshwerreddy Chilamari、Jacob R. Immel、Steven Bloom
DOI:10.1021/acscatal.0c03422
日期:2020.11.6
indispensable building blocks for modern synthetic chemistry. In recent years, visible light photoredox catalysis has become a promising avenue to access C-centered radicals from a broad array of latent functional groups, including boronic acids. Herein, we present an aqueous protocol wherein water features a starring role to help transform aliphatic, aromatic, and heteroaromatic boronic acids to C-centered
N-Substituted pyridinones having histamine H.sub.2 -antagonist activity
申请人:Smith Kline & French Laboratories Limited
公开号:US04540699A1
公开(公告)日:1985-09-10
This invention relates to N-substituted pyridinone compounds which have histamine H.sub.2 -antagonist activity. A specific compound of this invention is 2-[2-(5-methyl-4-imidazolylmethylthio)ethylamino]-5-(1-methyl-2-oxopyridin -4-ylmethyl)pyrimidin-4-one.
A chemical process is described for the preparation of H2-antagonists or precursors thereof, of the formula (V):
wherein R' is 5-methylimidazol-4-yl, furan-2-yl or 5-dimeth- ylaminomethylfuran-2-yl and R2 is 3,4-methylenedioxyphenyl or optionally protected 2-hydroxypyrid-4-yl; which process comprises reacting a compound of the formula (VI) with a compound of the formula (VII):
wherein R3 is C1-6alkyl; and thereafter if desired deprotecting a protected hydroxy group, converting a compound wherein R1 is furan-2-yl into a compound wherein R1 is 5-di- methylaminomethylfuran-2-yl, and/or forming a pharmaceutically acceptable salt.