申请人:Ciba-Geigy Corporation
公开号:US04746653A1
公开(公告)日:1988-05-24
The present invention is concerned with the phosphonic acids of formula I ##STR1## wherein one or both of the acidic hydroxy groups of the phosphonic acid moiety may be functionalized in form of pharmaceutically acceptable mono- or di-esters; wherein Y represents optionally substituted 2-carboxypyrrolidinyl, 2-carboxy-2,5-dihydropyrrolyl, 2-carboxy-1,2,3,6-tetrahydropyridinyl, 2-carboxy-1,2,5,6-tetrahydropyridinyl, 2-carboxypiperidinyl, 2-carboxytetrahydroquinolinyl or 2-carboxyperhydroquinolinyl, 2-carboxy-2,3-dihydroindolyl, 2-carboxyperhydroindolyl, and in each of which the carboxy group may be functionalized in form of a pharmaceutically acceptable ester or amide; A represents B--X--D wherein B represents a direct bond, or straight chain or branched lower alkylene; X represents O, S, SO, SO.sub.2, CO--NR.sub.b, R.sub.b N--CO or N--Ra; Ra represents hydrogen, lower alkyl, aryl, aryl-lower alkyl or acyl; R.sub.b represents hydrogen, lower alkyl or aryl-lower alkyl; D represents straight chain or branched lower alkylene; and pharmaceutically acceptable salts thereof; which are useful in mammals as antagonists of the N-methyl-D-aspartate sensitive excitatory amino acid receptor.
本发明涉及式I的膦酸:##STR1## 其中膦酸基团中的一个或两个酸性羟基可以以药学上可接受的单酯或二酯的形式进行官能化;其中Y代表可选取代的2-羧基吡咯烷基、2-羧基-2,5-二氢吡咯基、2-羧基-1,2,3,6-四氢吡啶基、2-羧基-1,2,5,6-四氢吡啶基、2-羧基哌啶基、2-羧基四氢喹啉基或2-羧基六氢喹啉基、2-羧基-2,3-二氢吲哚基、2-羧基六氢吲哚基,其中羧基可以以药学上可接受的酯或酰胺的形式进行官能化;A代表B-X-D,其中B代表直接键或直链或支链低级烷基;X代表O、S、SO、SO.sub.2、CO-NR.sub.b、R.sub.b N-CO或N-Ra;Ra代表氢、低级烷基、芳基、芳基-低级烷基或酰基;R.sub.b代表氢、低级烷基或芳基-低级烷基;D代表直链或支链低级烷基;以及其药学上可接受的盐。它们在哺乳动物中作为N-甲基-D-天门冬氨酸敏感的兴奋性氨基酸受体的拮抗剂是有用的。