( E )-3-Heteroarylidenechroman-4-ones as potent and selective monoamine oxidase-B inhibitors
摘要:
A series of (E)-3-heteroarylidenechroman-4-ones (1a-r) was designed, synthesized and investigated in vitro for their ability to inhibit the enzymatic activity of both human monoamine oxidase (hMAO) isoforms, hMAO-A and hMAO-B. All the compounds were found to be selective hMAO-B inhibitors showing IC50 values in the nanomolar or micromolar range. (E)-5,7-Dichloro-3-{[(2-(dimethylamino) pyrimidin-5-yl]methylene}chroman-4-one (1c) was the most interesting compound identified in this study, endowed with higher hMAO-B potency (IC50 = 10.58 nM) and selectivity (SI > 9452) with respect to the reference selective inhibitor selegiline (IC50 = 19.60 nM, IC50 > 3431). Molecular modelling studies were performed for rationalizing at molecular level the target selective inhibition of our compounds, revealing a remarkable contribution of hydrogen bond network and water solvent. (C) 2016 Elsevier Masson SAS. All rights reserved.
Synthesis of 2,4-diaryl chromenopyridines and evaluation of their topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship
作者:Uttam Thapa、Pritam Thapa、Radha Karki、Minho Yun、Jae Hun Choi、Yurngdong Jahng、Eunyoung Lee、Kyung-Hwa Jeon、Younghwa Na、Eun-Mi Ha、Won-Jea Cho、Youngjoo Kwon、Eung-Seok Lee
DOI:10.1016/j.ejmech.2011.04.029
日期:2011.8
Designed and synthesized were a series of 5H-chromeno[4,3-b]pyridines with substitution at 2- and 4-positions with various 5- or 6-membered heteroaromatics as antitumor agents. They were evaluated for topoisomerase I and II inhibitory activities as well as cytotoxicities against several human cancer cell lines. Structure activity relationship study showed that 2-furyl or 2-thienyl at 2- or 4-position of central pyridine is crucial in displaying topo I or II inhibitory activity and cytotoxicity. (C) 2011 Elsevier Masson SAS. All rights reserved.
2,4-Diaryl-5H-chromeno [4,3-b]pyridines: Synthesis, Topoisomerase I and II Inhibitory Activity, and Cytotoxicity
作者:Pritam Thapa、Eung-Seok Lee
DOI:10.5012/bkcs.2012.33.9.3103
日期:2012.9.20
( E )-3-Heteroarylidenechroman-4-ones as potent and selective monoamine oxidase-B inhibitors
A series of (E)-3-heteroarylidenechroman-4-ones (1a-r) was designed, synthesized and investigated in vitro for their ability to inhibit the enzymatic activity of both human monoamine oxidase (hMAO) isoforms, hMAO-A and hMAO-B. All the compounds were found to be selective hMAO-B inhibitors showing IC50 values in the nanomolar or micromolar range. (E)-5,7-Dichloro-3-[(2-(dimethylamino) pyrimidin-5-yl]methylene}chroman-4-one (1c) was the most interesting compound identified in this study, endowed with higher hMAO-B potency (IC50 = 10.58 nM) and selectivity (SI > 9452) with respect to the reference selective inhibitor selegiline (IC50 = 19.60 nM, IC50 > 3431). Molecular modelling studies were performed for rationalizing at molecular level the target selective inhibition of our compounds, revealing a remarkable contribution of hydrogen bond network and water solvent. (C) 2016 Elsevier Masson SAS. All rights reserved.