Reaction of β-alkoxyvinyl α-ketoesters with acyclic NCN binucleophiles – Scalable approach to novel functionalized pyrimidines
作者:Oleksandr O. Stepaniuk、Tymofii V. Rudenko、Bohdan V. Vashchenko、Vitalii O. Matvienko、Ivan S. Kondratov、Andrey A. Tolmachev、Oleksandr O. Grygorenko
DOI:10.1016/j.tet.2019.05.005
日期:2019.6
protocols for synthesis of series of low-molecular-weight di- and tri-substituted pyrimidines bearing a functional group at the 4th position, which rely on a base-mediated condensation of amidines or guanidines with β-alkoxyvinyl α-keto esters, have been developed. This approach allowed for multigram preparation of novel pyrimidine-4-carboxylates in 21–90% yield. The synthetic utility of these compounds
Provided herein are compounds of the formula (I): as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of inflammatory diseases and disorders such as, for example, asthma and COPD.
The reactions of acylformyl chlorides with 2- and 4-trimethylstannylpyrimidine derivatives proceeded more smoothly than those of acyl chlorides giving the corresponding 2- and 4-acylpyrimidines. Employing ethyl chlorogly-oxylate in stead of the acylating agent yielded the ethoxycarbonylpyrimidines. Similarly, the stepwise acylation and ethoxycarbonylation of bis(trimethylstannyl)-pyrimidines provided pyrimidines having two different carbon functional groups.
US5324710A
申请人:——
公开号:US5324710A
公开(公告)日:1994-06-28
[EN] NICOTINAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE NICOTINAMIDE
申请人:PFIZER PROD INC
公开号:WO2008075172A2
公开(公告)日:2008-06-26
[EN] The present invention relates to compounds of formula (I) and pharmaceutically acceptable salts and solvates thereof, wherein the substituents are as defined herein, compositions containing such compounds and the uses of such compounds for the treatment of various diseases and conditions such as asthma. [FR] La présente invention concerne des composés de formule (I) et des sels et solvates pharmaceutiquement acceptables correspondants, dans laquelle les substituants sont tels que définis ici, des compositions contenant ces composés et l'utilisation de ces composés pour le traitement de diverses maladies et états tels que l'asthme.