Synthesis and evaluation of isoxazole derivatives as lysophosphatidic acid (LPA) antagonists
摘要:
A series of isoxazole derivatives were synthesized and their antagonistic activities against LPA stimulation on both LPA(1)/ CHO cells and rHSC cells were evaluated. Among them, 3 -(4-{4- [1 -(2-chloro-cyclopent-1-enyl) -ethoxycarbonylamino] -isoxazol - 3- yl}-benzylsulfanyl)-propionic acid (34) showed the most potent activities. (c) 2007 Elsevier Ltd. All rights reserved.
Azole compounds represented by formula I:
wherein ring A is isoxazole and the like, R1 is a substituted or unsubstituted aryl group and the like, R2 is a hydrogen atom and the like, and R3 is a substituted or unsubstituted alkyl group and the like, and pharmaceutically acceptable salts thereof inhibit the physiological activity of lysophosphatidic acid (LPA), and are useful as for the prophylaxis or treatment of diseases in which inhibition of the physiological activity of LPA is useful for the prophylaxis or treatment thereof, such as diseases involving the LPA receptor.
DFT-HSAB Prediction of Regioselectivity in 1,3-Dipolar Cycloadditions: Behavior of (4-Substituted)benzonitrile Oxides towards Methyl Propiolate
作者:Alessandro Ponti、Giorgio Molteni
DOI:10.1002/chem.200500739
日期:2006.1.23
The regioselectivity of 1,3-dipolarcycloadditions between (4-substituted)benzonitrileoxides and methyl propiolate cannot be rationalized on the basis of the electron demand of the reactants or frontier molecular-orbital theory. To this problem, we have applied a quantitative formulation of the hard-soft acid-base principle developed within the density functional theory. Global and local reactivity
Azole compounds represented by formula I:
wherein ring A is isoxazole and the like, R1 is a substituted or unsubstituted aryl group and the like, R2 is a hydrogen atom and the like, and R3 is a substituted or unsubstituted alkyl group and the like, and pharmaceutically acceptable salts thereof inhibit the physiological activity of lysophosphatidic acid (LPA), and are useful as for the prophylaxis or treatment of diseases in which inhibition of the physiological activity of LPA is useful for the prophylaxis or treatment thereof, such as diseases involving the LPA receptor.