Compounds of formula
wherein
X is sulfur, oxygen or imino;
n is an integer of from 2 to 6 such that the length of the carbon chain connecting the two nitrogen atoms is not less than 2;
R1,R2,R3,R4 and R5 are independently hydrogen, loweralkyl, loweralkoxy, amino, haloloweralkyl, or phenyl; or any two adjacent substituents may be joined to form a benzo substituent;
R6 and R7 are independently hydrogen, phenyl-loweralkyl, N-Loweralkylcarbamoyl N-loweralkylthiocarbamoyl; or R6 and R, may be joined to form a morpholino ring or R6 and R7 may be an alkylene linkage of 4 or 5 carbon atoms to form a pyrrolidine or piperidine group which may be substituted with loweralkyl, oxo or benzo substituents; and the broken line in the 3,4 position of the naphthyridine molecule indicates that the bond may be either a single or a double bond; and the acid addition and quaternary ammonium salts thereof, provided that when n is 2, R3, R5, R6, and R7 are all methyl groups, X is oxygen and the 3,4-position is unsaturated at least one of R1, R2 or R4 is other than hydrogen are disclosed.
These compounds inhibit gastric secretions in the gastro-intestinal tract.
式的化合物
式中
X 是
硫、
氧或亚
氨基;
n 是 2 到 6 的整数,连接两个
氮原子的
碳链长度不小于 2;
R1、R2、R3、R4 和 R5 独立地是
氢、低级烷基、低级烷
氧基、
氨基、卤代低级烷基或
苯基;或任意两个相邻取代基可连接形成
苯并取代基;
R6 和 R7 独立地为
氢、
苯基-低级烷基、N-低级烷基
氨基甲酰基 N-低级烷基
硫代
氨基甲酰基;或 R6 和 R,可连接形成
吗啉环,或 R6 和 R7 可为 4 或 5 个
碳原子的亚烷基连接,形成可被低级烷基、
氧代或
苯并取代基取代的
吡咯烷或
哌啶基;
萘啶分子 3,4 位上的断线表示该键可以是单键或双键;公开了其酸加成盐和季
铵盐,条件是当 n 为 2,R3、R5、R6 和 R7 均为
甲基,X 为
氧,且 3,4 位为不饱和位时,R1、R2 或 R4 中至少有一个不是
氢。
这些化合物可抑制胃肠道的胃液分泌。