Solvent-Free Synthesis of 4<i>H</i>-Pyrido[1,2-<i>a</i>]pyrimidin-4-ones Catalyzed by BiCl<sub>3</sub>: A Green Route to a Privileged Backbone
作者:Irwan I. Roslan、Qiu-Xuan Lim、Aijuan Han、Gaik-Khuan Chuah、Stephan Jaenicke
DOI:10.1002/ejoc.201500227
日期:2015.4
An extensive array of 4H-pyrido[1,2-a]pyrimidin-4-ones have been synthesized from commercially available 2-aminopyridines and β-oxo esters with excellent yields under solvent-free conditions. The reaction, catalyzed by cheap and nontoxic BiCl3, proceeds with short reaction times under mild conditions and normal atmosphere. Only water and alcohol are formed as co-products in this green reaction.
Practical synthesis of 4H-pyrido[1, 2-a]pyrimidin-4-ones using ethylene glycol as a promoting solvent
作者:Mustafa Hussain、Jianhui Liu
DOI:10.1016/j.tetlet.2020.152269
日期:2020.9
A simple and useful protocol leading to different 4H-pyrido[1, 2-a] pyrimidin-4-ones have been established by cyclization of various 2-amino pyridines with β-oxo ester or alkynoate. The use of ethylene glycol was demonstrated to facilitate this condensation. This reaction proceeds by nontoxic, cheap, environment friendliness and biodegradable solvent at the normal green atmospheric condition in the
Photoinduced Regioselective Chalcogenation and Thiocyanation of 4<i>H</i>‐Pyrido[1,2‐<i>a</i>] pyrimidin‐4‐ones Under Benign Conditions
作者:Abhinay S. Chillal、Rajesh T. Bhawale、Umesh A. Kshirsagar
DOI:10.1002/ejoc.202300665
日期:2023.9.6
A mild approach for regioselective C3−H chalcogenation and thiocyanation of 4H-pyrido[1,2-a] pyrimidin-4-ones is developed using visible light photo-catalysis. This operationally straightforward method furnishes a broad array of C-3, Ar−S/Ar−Se and -SCN functionalized derivatives in moderate to high yields using visible light as an environment friendly energy source.
PYRIDINO[1,2-A]PYRIMIDONE ANALOGUE USED AS MTOR/PI3K INHIBITOR
申请人:Cisen Pharmaceutical Co., Ltd.
公开号:EP3159342A1
公开(公告)日:2017-04-26
Disclosed is a pyridino[1, 2-a]pyrimidone analogue used as an mTOR/PI3K inhibitor. The present invention particularly relates to a compound represented by formula (I) or a pharmaceutically acceptable salt thereof.
[EN] PYRIDINO[1,2-A]PYRIMIDONE ANALOGUE USED AS MTOR/PI3K INHIBITOR<br/>[FR] ANALOGUE DE PYRIDINO [1,2-A] PYRIMIDONE UTILISÉ EN TANT QU'INHIBITEUR DE PI3K/MTOR<br/>[ZH] 作为mTOR/PI3K抑制剂的吡啶并[1,2-a]嘧啶酮类似物