A compound with hypoglycaemic activity having formula (II) or a pharmaceutically acceptable ammonium or acid addition salt thereof:
wherein
R' and R2 are the same or different and represent hydrogen, Ci-6 alkyl, C1-6 alkoxy, hydroxy or halogen;
R3 and R' are the same or different and represent hydrogen or C1-6 alkyl;
R' represents hydrogen or C1-6 alkyl;
R6 represents C1-6 alkyl, phenyl optionally substituted with up to 3 groups selected from halogen, C1-6alkyl, and C1-6 alkoxy; or benzyl optionally substituted with up to 3 groups selected from halogen, C1-6 alkyl and C1-6 alkoxy; or R5 and R6 together represent the remaining members of a 5- or 6- membered ring optionally containing an oxygen, sulphur or additional nitrogen atom and being optionally substituted with C1-6 alkyl, carboxy or C1-6 alkoxycarbonyl; and
R' represents phenyl, optionally substituted with up to 3 groups selected from halogen, C1-6 alkyl and C1-6 alkoxy, C1-6 alkoxy carbonyl, C1-6 alkanoyl, C1-6 alkyanoyloxy, nitro, hydro, amino, substituted amino, and carboxy.
具有式 (II) 或其药学上可接受的
铵盐或酸加成盐的具有降血糖活性的化合物:
其中
R' 和 R2 相同或不同,代表氢、Ci-6 烷基、C1-6 烷氧基、羟基或卤素;
R3 和 R' 相同或不同,代表氢或 C1-6 烷基;
R' 代表氢或 C1-6 烷基;
R6 代表 C1-6 烷基、任选被最多 3 个选自卤素、C1-6 烷基和 C1-6 烷氧基的基团取代的苯基;或任选被最多 3 个选自卤素、C1-6 烷基和 C1-6 烷氧基的基团取代的苄基;或 R5 和 R6 共同代表任选含有一个氧原子、
硫原子或附加氮原子并任选被 C1-6 烷基、羧基或 C1-6 烷氧基羰基取代的 5 或 6 成员环的其余成员;以及 R' 代表苯基、任选被最多 3 个选自卤素、C1-6 烷基和 C1-6 烷氧基的基团取代的苯基。
R' 代表苯基,可任选被最多 3 个基团取代,这些基团选自卤素、C1-6 烷基和 C1-6 烷氧基、C1-6 烷氧基羰基、C1-6 烷酰基、C1-6 烷酰氧基、硝基、氢基、
氨基、取代
氨基和羧基。