Design, Synthesis, and Pharmacological Evaluation of Monocyclic Pyrimidinones as Novel Inhibitors of PDE5
摘要:
Cyclic nucleotide phosphodiesterase type 5 (PDES) is a prime drug target for treating the diseases associated with a lower level of the cyclic guanosine monophosphate (cGMP), which is a specific substrate for PDE5 hydrolysis. Here we report a series of novel PDE5 inhibitors with the new scaffold of the monocyclic pyrimidin-4(3H)-one ring developed using the structure-based discovery strategy. In total, 37 derivatives of the pyrimidin-4(3H)-ones, were designed, synthesized, and evaluated for their inhibitory activities to PDES, resulting in 25 compounds with IC50 ranging from 1 to 100 nM and 11 compounds with IC50 ranging from 1 to 10 nM. Compound 5, 5,6-diethyl-2[2-n-propoxy-5-(4-methyl-1-piperazinylsulfonyl)phenyl]pyrimid-4(3H)-one, the most potent compound, has an excellent IC50 (1.6 nM) in vitro and a good efficacy in a rat model of erection. It thus provides a potential candidate for the further development into a new drug targeting PDE5.
Rhodium-Catalyzed Alkenylation of Nitriles via Silicon-Assisted C−CN Bond Cleavage
摘要:
Rhodium-catalyzed Mizoroki-Heck type reaction of nitriles via the cleavage of C-C bonds is described. Orthogonal and iterative functionalizations of arenes were also demonstrated by combining the present and conventional halide-based cross-coupling reactions.
Semiheterogeneous Dual Nickel/Photocatalytic (Thio)etherification Using Carbon Nitrides
作者:Cristian Cavedon、Amiera Madani、Peter H. Seeberger、Bartholomäus Pieber
DOI:10.1021/acs.orglett.9b01957
日期:2019.7.5
nitride material can be combined with homogeneous nickel catalysts for light-mediated cross-couplings of aryl bromides with alcohols under mild conditions. The metal-free heterogeneous semiconductor is fully recyclable and couples a broad range of electron-poor aryl bromides with primary and secondaryalcohols as well as water. The application for intramolecular reactions and the synthesis of active pharmaceutical
Cyclic nucleotide phosphodiesterase type 5 (PDES) is a prime drug target for treating the diseases associated with a lower level of the cyclic guanosine monophosphate (cGMP), which is a specific substrate for PDE5 hydrolysis. Here we report a series of novel PDE5 inhibitors with the new scaffold of the monocyclic pyrimidin-4(3H)-one ring developed using the structure-based discovery strategy. In total, 37 derivatives of the pyrimidin-4(3H)-ones, were designed, synthesized, and evaluated for their inhibitory activities to PDES, resulting in 25 compounds with IC50 ranging from 1 to 100 nM and 11 compounds with IC50 ranging from 1 to 10 nM. Compound 5, 5,6-diethyl-2[2-n-propoxy-5-(4-methyl-1-piperazinylsulfonyl)phenyl]pyrimid-4(3H)-one, the most potent compound, has an excellent IC50 (1.6 nM) in vitro and a good efficacy in a rat model of erection. It thus provides a potential candidate for the further development into a new drug targeting PDE5.
Rhodium-Catalyzed Alkenylation of Nitriles via Silicon-Assisted C−CN Bond Cleavage
作者:Yusuke Kita、Mamoru Tobisu、Naoto Chatani
DOI:10.1021/ol100481h
日期:2010.4.16
Rhodium-catalyzed Mizoroki-Heck type reaction of nitriles via the cleavage of C-C bonds is described. Orthogonal and iterative functionalizations of arenes were also demonstrated by combining the present and conventional halide-based cross-coupling reactions.