Discovery of 2-(Phenoxypyridine)-3-phenylureas as Small Molecule P2Y<sub>1</sub> Antagonists
作者:Hannguang Chao、Huji Turdi、Timothy F. Herpin、Jacques Y. Roberge、Yalei Liu、Dora M. Schnur、Michael A. Poss、Robert Rehfuss、Ji Hua、Qimin Wu、Laura A. Price、Lynn M. Abell、William A. Schumacher、Jeffrey S. Bostwick、Thomas E. Steinbacher、Anne B. Stewart、Martin L. Ogletree、Christine S. Huang、Ming Chang、Angela M. Cacace、Maredith J. Arcuri、Deborah Celani、Ruth R. Wexler、R. Michael Lawrence
DOI:10.1021/jm301708u
日期:2013.2.28
suggest that P2Y1 and P2Y12 inhibition provide equivalent antithrombotic efficacy, while targeting P2Y1 has the potential for reduced bleeding liability. In this account, the discovery of a 2-(phenoxypyridine)-3-phenylurea chemotype that inhibited ADP-mediated platelet aggregation in human blood samples is described. Optimization of this series led to the identification of compound 16, 1-(2-(2-tert
The kinetics of the reaction of 2-chloro-3-nitropyridine (ortho-like) and 2-chloro-5-nitropyridine (para-like) with a series of aryloxide ions were studied in methanol at different temperatures. Plots of Delta H-not equal versus Delta S-not equal for both reactions gave good straight lines with isokinetic temperatures of 168 and 195 degrees C. Good linear relationships were obtained from the plots of log k(2) against sigma degrees values with relatively large negative rho values indicating the formation of Meisenheimer sigma-complex intermediates. Plots of log k(2) against pK(a) values gave good straight lines indicating that the reactions show an appreciable degree of bond formation in the transition state. An addition-elimination mechanism is suggested. Copyright (C) 1999 John Wiley & Sons, Ltd.
Synthesis of pyrido[2,3-b][1,4]benzoxazepines via a Friedel−Crafts cyclization
An efficient and practical method has been developed for the synthesis of 6-aryl-substituted pyrido[2,3-b][1,4]benzoxazepines via a Friedel−Crafts reaction of readily accessible 2-phenoxypyridin-3-amines and aromatic acids.
已经开发了一种有效且实用的方法,用于通过易于获得的2-苯氧基吡啶-3-胺和芳族酸的Friedel-Crafts反应合成6-芳基取代的吡啶并[2,3- b ] [1,4]苯并x氮平。