申请人:Sandoz, Inc.
公开号:US04052510A1
公开(公告)日:1977-10-04
Compounds of the formula ##STR1## wherein R is secondary alkyl of 3 to 7 carbon atoms or tertiary alkyl of 4 to 7 carbon atoms, R' is secondary alkyl of 3 to 7 carbon atoms or tertiary alkyl of 4 to 7 carbon atoms, R.sub.1 is alkyl of 1 to 4 carbon atoms, R.sub.2 is hydrogen, chloro or bromo, and R.sub.3 is hydrogen, --CO--R.sub.4 or cyano, Wherein R.sub.4 is alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 3 carbon atoms, ##STR2## OR AMINO, WHEREIN EACH X is independently alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms or halo or two X's on adjacent carbon atoms together are methylenedioxy, with the proviso that the ortho positions of the phenyl ring are free of halo substituents, and n is 0, 1, 2 or 3, And the pharmaceutically acceptable acid addition salts thereof, Are useful as anti-obesity and anti-diabetic agents. The compounds wherein R.sub.2 is hydrogen and R.sub.3 is alkylcarbonyl, benzoyl or substituted benzoyl are synthesized from ketoketenimines and amidines while those wherein R.sub.2 is hydrogen and R.sub.3 is alkylcarbonyl are also synthesized from isoxazolium salts and ammonia. The compounds wherein R.sub.2 is hydrogen and R.sub.3 is cyano are synthesized from the corresponding 2,6-dihalopyridines as are many of the other compounds. The compounds wherein R.sub.2 is hydrogen and R.sub.3 is alkylcarbonyl, alkoxycarbonyl or carbamoyl are synthesized from the corresponding cyano compounds. The compounds wherein R.sub.2 is hydrogen and R.sub.3 is (C.sub.2-4 alkyl) carbonyl are also synthesized from the corresponding compounds wherein R.sub.3 is acetyl. The compounds wherein R.sub.2 is chloro or bromo are synthesized from the corresponding compounds wherein R.sub.2 is hydrogen and an N-halosuccinimide. The compounds wherein R.sub.3 is hydrogen are synthesized from the corresponding alkylcarbonyl compounds or 2,6-dihalopyridines.
式为##STR1##的化合物,其中R是3到7个碳原子的二级烷基或4到7个碳原子的三级烷基,R'是3到7个碳原子的二级烷基或4到7个碳原子的三级烷基,R.sub.1是1到4个碳原子的烷基,R.sub.2是氢、氯或溴,R.sub.3是氢、-CO-R.sub.4或氰基,其中R.sub.4是1到4个碳原子的烷基,1到3个碳原子的烷氧基,##STR2##或氨基,其中每个X独立地是1到3个碳原子的烷基、1到3个碳原子的烷氧基或卤素,或相邻碳原子上的两个X一起是亚甲二氧基,但苯环的邻位位置不含卤素取代基,n为0、1、2或3,以及其药学上可接受的酸加盐,可用作抗肥胖和抗糖尿病药物。其中R.sub.2为氢且R.sub.3为烷基羰基、苯甲酰基或取代苯甲酰基的化合物是由酮酮亚胺和胺酮合成的,而其中R.sub.2为氢且R.sub.3为烷基羰基也是由异噁唑盐和氨合成的。其中R.sub.2为氢且R.sub.3为氰基的化合物是由相应的2,6-二卤吡啶合成的,许多其他化合物也是如此。其中R.sub.2为氢且R.sub.3为烷基羰基、烷氧羰基或氨基甲酰的化合物是由相应的氰基化合物合成的。其中R.sub.2为氢且R.sub.3为(C.sub.2-4烷基)羰基也是由相应的R.sub.3为乙酰的化合物合成的。其中R.sub.2为氯或溴的化合物是由相应的R.sub.2为氢和N-卤代琥珀酰亚胺的化合物合成的。其中R.sub.3为氢的化合物是由相应的烷基羰基化合物或2,6-二卤吡啶合成的。