Tetrazole-substituted ureas as inhibitors of acyl-CoA:cholesterol O-acyltransferase (ACAT). A novel preparation of ureas from weakly nucleophilic amines
摘要:
A novel series of tetrazole-substituted ureas 2 were prepared from weakly nucleophilic amines using a new coupling method. The ureas were found to potently inhibit liver ACAT in vitro and lower total serum cholesterol in vivo. A comparison of urea 2b and the anti-atherosclerotic CI-976 in a long-term model of atherosclerosis indicates the importance of inhibiting arterial ACAT for reducing lesion size. Copyright (C) 1996 Elsevier Science Ltd
Tetrazole-substituted ureas as inhibitors of acyl-CoA:cholesterol O-acyltransferase (ACAT). A novel preparation of ureas from weakly nucleophilic amines
摘要:
A novel series of tetrazole-substituted ureas 2 were prepared from weakly nucleophilic amines using a new coupling method. The ureas were found to potently inhibit liver ACAT in vitro and lower total serum cholesterol in vivo. A comparison of urea 2b and the anti-atherosclerotic CI-976 in a long-term model of atherosclerosis indicates the importance of inhibiting arterial ACAT for reducing lesion size. Copyright (C) 1996 Elsevier Science Ltd
(EN) ACAT inhibitors useful in the treatment of atherosclerosis which are tetrazole-substituted ureas, of formula (I) wherein R1 is phenyl which is unsubstituted or is substituted with from 1 to 3 substituents; R2 is (a) aryl which is unsubstituted or substituted with 1 to 3 substituents, (b) a straight or branched hydrocarbon group, (c) a straight of branched alkoxy group, (d) a cycloalkyl group, (e) aralkyl; R3 is attached to either the 1- or 2-position of the tetrazole ring and is selected from a straight or branched hydrocarbon chain having from 1 to 20 carbon atoms and which is saturated or unsaturated containing 1 double bond or 2 or 3 nonadjacent double bonds wherein said chain is unsubstituted or is substituted with from 1 to 6 substituents; and n= 0, 1 or 2.(FR) Les inhibiteurs de l'ACAT utiles dans le traitement de l'athérosclérose sont des urées tétrazole substituées de la formule (I) dans laquelle R1 est phényle qui est non substitué ou substitué par 1 à 3 substituants; R2 est (a) aryle qui est non substitué ou substitué par 1 à 3 substituants, (b) un groupe hydrocarbure droit ou ramifié, (c) un groupe alcoxy droit ou ramifié, (d) un groupe cycloalkyle, (e) aralkyle; R3 est fixé soit en position 1 soit en position 2 du noyau tétrazole et est choisi parmi une chaîne hydrocarbure droite ou ramifiée possédant de 1 à 20 atomes de carbone, chaîne qui est saturée ou insaturée et contient une liaison double ou 2 ou 3 liaisons doubles non adjacentes dans lesquelles ladite chaîne est non substituée ou substituée par 1 à 6 substituants; et n vaut 0, 1 ou 2.