Certain hetero phosphonic acid derivatives of 2-piperidine or 2-tetrahydropyridinecarboxylates and esters thereof which are useful for the treatment of disorders responsive to blockade of the NMDA receptor in mammals
US4746653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Feb 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/59
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.