Facile transformation of Biginelli pyrimidin-2(1H)-ones to pyrimidines. In vitro evaluation as inhibitors of Mycobacterium tuberculosis and modulators of cytostatic activity
摘要:
A series of pyrimidine derivatives bearing amine substituents at C-2 position were obtained from Biginelli 3,4-dihydropyrimidin-2(1H)-ones and the effect of structural variation on anti-TB activity against Mycobacterium tuberculosis H(37)Rv strain and antiviral activity in a series of cell cultures was evaluated. While the compounds were found to possess structure dependent cytostatic activity, these were not found to be efficient inhibitors of M. tuberculosis nor did they inhibit a broad variety of DNA or RNA viruses in cell culture. (C) 2011 Elsevier Masson SAS. All rights reserved.
Copper(<scp>i</scp>) chloride promoted Csp<sup>2</sup>–N cross-coupling of 1,2-di(pyrimidin-2-yl) disulfides with amines: an efficient approach to obtain C2-amino functionalized pyrimidines
作者:Kai-Jie Wei、Zheng-jun Quan、Zhang Zhang、Yu-xia Da、Xi-cun Wang
DOI:10.1039/c5ob02535d
日期:——
The copper(I)-promoted cross-coupling of 1,2-di(pyrimidin-2-yl) disulfides with aromatic amines and aliphatic amines to deliver C–N coupling products in moderate to good yields is reported in this paper. Central to this strategy is the conversion of disulfides into aryl- and alkyl amines by a copper-promoted chemoselective C–S bond cleavage.
A mild and rapid procedure to the synthesis of 2-substituted pyrimidines was developed via sequential functionalization of easily available Biginelli 3,4-dihydropyrimidine-2(1H)-ones via oxidation, esterification, followed by cross-couplingreaction of pyrimidin-2-yl sulfonates with N, S, and O nucleophiles in PEG-400 as a green reaction medium at room temperature.
通过氧化、酯化以及嘧啶-2-的交叉偶联反应对容易获得的 Biginelli 3,4-二氢嘧啶-2(1H)-酮进行顺序功能化,开发了一种温和且快速的合成 2-取代嘧啶的方法在室温下作为绿色反应介质,在 PEG-400 中使用 N、S 和 O 亲核试剂制备基磺酸盐。
Synthesis of C2-functionalized pyrimidines from 3,4-dihydropyrimidin-2(1H)-ones by the Mitsunobu coupling reaction
作者:Xi-Cun Wang、Guo-Jun Yang、Xiao-Dong Jia、Zhang Zhang、Yu-Xia Da、Zheng-Jun Quan
DOI:10.1016/j.tet.2011.02.046
日期:2011.5
The Biginelli 3,4-dihydropyrimidin-2(1H)-one was converted to various C2-multifunctionalized pyrimidines via the dehydrogenation and Mitsunobu reaction using amines, alcohols, phenols and carboxylic acids as nucleophiles. A possible mechanism was also proposed to rationalize the formation of products.
Nucleophilic Substitution Reaction of Pyrimidin-2-yl Phosphates Using Amines and Thiols as Nucleophiles Mediated by PEG-400 as an Environmentally Friendly Solvent
reaction of pyrimidin-2-yl phosphates with amines and thiophenols in PEG-400 has been developed. The desired products can be generated in good to excellent yields in the environmentally friendly PEG-400, without any catalysts or other additives. A metal-free synthesis of C2-functionalized pyrimidines via the reaction of pyrimidin-2-yl phosphates with amines and thiophenols in PEG-400 has been developed
Cu-Catalyzed Direct Amination of Cyclic Amides via C–OH Bond Activation Using DMF
作者:Peng Chen、Kaixiu Luo、Xianglin Yu、Xu Yuan、Xiaoyu Liu、Jun Lin、Yi Jin
DOI:10.1021/acs.orglett.0c02320
日期:2020.8.21
aromatic heterocyclic amines from cyclic amides. The most-reported methods for cyclic amide conversions to aromatic heterocyclic amines use an activating group, such as a halogen atom or a trifluoromethane sulfonyl group. However, subsequent elimination of activating groups during the amination process results in significant waste. This copper-catalyzed direct amination of cyclic amides in DMF forms aromatic