申请人:G. D. Searle & Co.
公开号:US04003904A1
公开(公告)日:1977-01-18
The present invention encompasses a compound of the formula ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein Y is alkylene having 1-4 carbon atoms; R.sub.1 and R.sub. 2 together with N is a heterocyclic ring system consisting of an azamonocyclic ring of the formula ##STR2## wherein Z is oxygen, methylene, phenylhydroxymethylene, phenylcarboxymethylene or, phenylloweralkoxymethylene, or an azabicycloalkane structure having 6-9 carbon atoms and having at least 5 atoms in each ring of the azabicycloalkane structure; X is hydrogen, halogen, loweralkyl having 1-7 carbon atoms, or loweralkoxy having 1-7 carbon atoms; and Ar is phenyl, pyridyl, or monosubstituted phenyl wherein the substituent is halogen, loweralkyl having 1-7 carbon atoms, or loweralkoxy having 1-7 carbon atoms when R.sub.3 is hydrogen or Ar is 3 or 4 pyridyl when R.sub.3 is lower alkyl having 1-7 carbon atoms. The compounds of the present invention are prepared by converting the corresponding nitriles to 1H-tetrazoles and in turn reacting the 1H-tetrazole with ethyl chloroglyoxylate, hydrolyzing the resulting ester to the acid and decarboxylation to provide compounds wherein R.sub.3 is hydrogen. Compounds of the present invention are anti diarrheal agents.
本发明涵盖了以下公式的化合物及其药学上可接受的酸加合盐:其中Y是具有1-4个碳原子的烷基;R.sub.1和R.sub.2与N一起形成一个由以下公式的氮杂单环环组成的杂环环系统:其中Z是氧、亚甲基、苯基羟甲基、苯基羧甲基或苯基低碳基氧甲基,或者是具有6-9个碳原子且在每个环中至少有5个原子的氮杂双环戊烷结构;X是氢、卤素、具有1-7个碳原子的低烷基或具有1-7个碳原子的低烷氧基;Ar是苯基、吡啶基或单取代苯基,其中取代基是卤素、具有1-7个碳原子的低烷基或具有1-7个碳原子的低烷氧基,当R.sub.3为氢或Ar为3或4吡啶基时,取代基为具有1-7个碳原子的低烷基。本发明的化合物是通过将相应的腈转化为1H-四唑,然后将1H-四唑与氯乙酰乙酸乙酯反应,水解得到酯,脱羧得到R.sub.3为氢的化合物。本发明的化合物是抗腹泻剂。