3,4-Disubstituted-1,2,5-oxadiazoles having histamine H2-receptor antagonist activity
申请人:Bristol-Myers Squibb Company
公开号:EP0150073A1
公开(公告)日:1985-07-31
Histamine H2-antagonists of the formula:
wherein
m is an integer of from 0 to 2 inciusive;
n is an integer of from 2 to 5 inclusive;
Z is oxvaen. sulfur or methviene: and
A is
in which R1 is hydrogen, (lower)alkyl, or (lower) alkoxy, and R2 is
in which q is an integer of from 1 to 4 inclusive, and R3 and R4 each are independently, (lower) alkyl, (lower)alkoxy (lower) alkyl in which the (lower) alkoxy moiety is at least two carbon atoms removed from the nitrogen atom, cyclo (lower) alkyl, or phenyl (lower) alkyl; provided that R3 and R4 may not both be cyclo (lower) alkyl; or R3 and R4, taken together with the nitrogen atom to which they are attached, may be pyrrolidino, methylpyrrolidino, dimethylpyrrolidino, morpholino, thiomorpholino, piperidino, methylpiperidino, dimethylpiperidino, N-methylpiperazino, 1,2,3,6-tetrahydropyridyt, homopiperidino, heptamethyleneimino, octamethyleneimino, or 3-azabicyclo-[3.2.2]non-3-yl; and nontoxic, pharmaceutically acceptable salts, hydrates, solvates and N-oxides thereof.
式中的组胺 H2- 拮抗剂:
式中
m 是 0 至 2(含)的整数;
n 是 2 至 5(包括 5)的整数;
Z 是氧、硫或甲硫醚;以及
A 是
其中 R1 是氢、(低级)烷基或(低级)烷氧基,R2 是
其中 q 是 1 至 4(包括 4)的整数,R3 和 R4 各自独立地是(低级)烷基、(低级)烷氧基(低级)烷基(其中(低级)烷氧基分子从氮原子移除至少两个碳原子)、环(低级)烷基或苯基(低级)烷基;但 R3 和 R4 不能都是环(低级)烷基;或 R3 和 R4 连同它们所连接的氮原子可以是吡咯烷基、甲基吡咯烷基、二甲基吡咯烷基、吗啉基、硫代吗啉基、哌啶基、甲基哌啶基、二甲基哌啶基、N-甲基哌嗪基、1,2,3,6-四氢吡啶基、均哌啶基、七亚甲基亚氨基、八亚甲基亚氨基或 3-氮杂双环-[3.2.2]壬-3-基;以及它们的无毒、药学上可接受的盐、水合物、溶剂和 N-氧化物。