申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04051170A1
公开(公告)日:1977-09-27
Diphenoxyacetic acid derivatives of the general formula ##STR1## wherein R.sub.1 is H or alkyl of 1-4 carbon atoms, R.sub.2 is H or Cl, R.sub.2 is H or Cl, R.sub.3 is piperidino, 4-piperidinophenyl, 1,2,3,4-tetrahydroquinolino, 1-R.sub.4 -1,2,3,4-tetrahydro-4-quinolyl, 4-oxo-1,2,3,4-tetrahydroquinolino, 4-chromanyl, 4-thiochromanyl or 4-chlorophenoxy, and R.sub.4 is H or alkyl of 1-4 carbon atoms, and the physiologically acceptable salts thereof, possess cholesterol level lowering activity and can be prepared by reacting a phenol of the formula ##STR2## with a compound of the formula ##STR3## wherein X is OH, esterified OH, Cl, Br or I, one R is R.sub.2 and the other is R.sub.3 ; or by cyclizing a compound of the formula ##STR4## wherein X.sub.1 is Cl, Br, I, NH.sub.2 OH or an esterified or etherified OH-group and n is 0 or 1; or by treating a compound of the formula ##STR5## wherein Z is a functionally modified carboxyl group different from COOR.sub.1, with a solvolyzing agent, R.sub.1, R.sub.2 and R.sub.3 in each instance having the values given above.
一般式为##STR1##的二苯氧基乙酸衍生物,其中R.sub.1为H或1-4碳原子的烷基,R.sub.2为H或Cl,R.sub.2为H或Cl,R.sub.3为哌啶基、4-哌啶基苯基、1,2,3,4-四氢喹啉基、1-R.sub.4-1,2,3,4-四氢-4-喹啉基、4-氧代-1,2,3,4-四氢喹啉基、4-色基、4-硫色基或4-氯苯氧基,R.sub.4为H或1-4碳原子的烷基,以及其生理上可接受的盐,具有降低胆固醇水平的活性,并且可以通过将式##STR2##的苯酚与式##STR3##的化合物反应制备而成,其中X为OH、酯化的OH、Cl、Br或I,一个R为R.sub.2,另一个为R.sub.3;或通过环化式##STR4##的化合物制备而成,其中X.sub.1为Cl、Br、I、NH.sub.2OH或酯化或醚化的OH基团,n为0或1;或通过用溶解剂催化剂处理式##STR5##的化合物制备而成,其中Z为与COOR.sub.1不同的功能修饰的羧基,每次的R.sub.1、R.sub.2和R.sub.3具有上述给定的值。