N1-Alkylated 3,4-dihydropyrimidine-2(1H)-ones: Convenient one-pot selective synthesis and evaluation of their calcium channel blocking activity
摘要:
It has been found that selective N1-alkylation of 3,4-dihydropyrimidine-2(1H)-ones can be achieved under solvent-less, mild phase transfer catalytic (PTC) conditions with tetrabutylammonium hydrogen sulfate and 50% aqueous NaOH as the catalyst and base, respectively. The procedure is tolerant to substitutional variation at key diversity points on the pyrimidinone moiety. (C) 2008 Elsevier Masson SAS All rights reserved.
N1-Alkylated 3,4-dihydropyrimidine-2(1H)-ones: Convenient one-pot selective synthesis and evaluation of their calcium channel blocking activity
作者:Kamaljit Singh、Divya Arora、Elizabeth Poremsky、Jazmyne Lowery、Robert S. Moreland
DOI:10.1016/j.ejmech.2008.10.002
日期:2009.5
It has been found that selective N1-alkylation of 3,4-dihydropyrimidine-2(1H)-ones can be achieved under solvent-less, mild phase transfer catalytic (PTC) conditions with tetrabutylammonium hydrogen sulfate and 50% aqueous NaOH as the catalyst and base, respectively. The procedure is tolerant to substitutional variation at key diversity points on the pyrimidinone moiety. (C) 2008 Elsevier Masson SAS All rights reserved.
Regioselective N1-alkylation of 3,4-dihydropyrimidine-2(1H)-ones: Screening of their biological activities against Ca2+-ATPase
作者:Salil Putatunda、Srabasti Chakraborty、Swatilekha Ghosh、Pinki Nandi、Supriya Chakraborty、Parimal C. Sen、Arijit Chakraborty
DOI:10.1016/j.ejmech.2012.04.043
日期:2012.8
A regioselective N1-alkylation of 3,4-dihydropyrimidin-2(1H)-ones using a very efficient mild base Cs2CO3 and alkyl halides at room temperature has been reported. The selectivity of this methodology is excellent and the yields of the alkylated products are very good. Furthermore inhibitory action of both the 3,4-dihydropyrimidin-2(1H)-ones and the N1-alkylated derivatives were tested on Ca2+-ATPase, which revealed that the parent compounds can act as Ca2+-ATPase inhibitors whereas the N1-alkylated derivatives are inefficient for this purpose. (C) 2012 Elsevier Masson SAS. All rights reserved.