[EN] AMINO QUINAZOLINE DERIVATIVES AS P2X3 INHIBITORS<br/>[FR] DÉRIVÉS D'AMINO QUINAZOLINE SERVANT D'INHIBITEURS DE P2X3
申请人:CHIESI FARM SPA
公开号:WO2020239951A1
公开(公告)日:2020-12-03
The present invention relates to compounds of formula I inhibiting P2X purinoceptor 3; particularly the invention relates to compounds that are amino quinazoline derivatives, methods of preparing such compounds, pharmaceutical compositions containing them and therapeutic use thereof. The compounds of the invention may be useful in the treatment of many disorders associated with P2X3 receptors mechanisms, such as respiratory diseases including cough, asthma, idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD).
metal-free method for the synthesis of quinazolinesfrom 2-aminophenyl ketones and 2,2,2‑trichloroethyl imidates hydrochloride in the presence of sodium acetate is reported. The present approach has advantages including mild reaction conditions, readily available starting materials, and gram-scale synthesis. This methodology leads to an efficient construction of various quinazoline derivatives in moderate
Visible-light photocatalyzed C–N bond activation of tertiary amines: a three-component approach to synthesize quinazolines
作者:Ajithkumar Arumugam、Gopal Chandru Senadi
DOI:10.1039/d3ob02067c
日期:——
three-component approach has been developed to prepare 2,4-disubstituted quinazolines from o-acylanilines, trialkylamines and ammonium chloride under visible-light using eosin Y as the photocatalyst. The notable features of this work include (i) the use of tertiaryamines as an alkyl synthon and triethanolamine as a C2-OH synthon; (ii) good functional group tolerance with 52%–98% yields; (iii) proof of
开发了一种无金属三组分方法,以曙红 Y 作为光催化剂,在可见光下由邻酰基苯胺、三烷基胺和氯化铵制备 2,4-二取代喹唑啉。这项工作的显着特点包括(i)使用叔胺作为烷基合成子和三乙醇胺作为C 2 -OH合成子; (ii) 良好的官能团耐受性,产率 52%–98%; (iii) 以邻氨基苯甲醛为底物传递 2-甲基喹唑啉3pa的概念验证; (iv)化合物3ga 、 3ja和3ma的克级合成。基于控制研究和氧化还原电位值,提出了还原猝灭机制。