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|Abstract:||The present invention relates to substantially pure piperidine derivative compounds of the formulae: ##STR1## wherein R.sub.1 is hydrogen or hydroxy; R.sub.2 is hydrogen; or R.sub.1 and R.sub.2 taken together form a second bond between the carbon atoms bearing R.sub.1 and R.sub.2 ; R.sub.3 is --COOH or --COOR.sub.4 ; R.sub.4 has 1 to 6 carbon atoms; A, B, and D are the substituents of their respective rings each of which may be different or the same and are hydrogen, halogens, alkyl, hydroxy, alkoxy, or other substituents. A process of preparing such piperidine derivative compounds in substantially pure form is also disclosed.|
|Inventor(s):||D'Ambra; Thomas E. (Wynantskill, NY)|
|Assignee:||Albany Molecular Research, Inc. (Albany, NY)|
Patent Claim Types:|
see list of patent claims
|Compound; Composition; Use; Process;|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Austria||174589||<disabled in preview>|
|Austria||254594||<disabled in preview>|
|Austria||322473||<disabled in preview>|
|This preview shows a limited data set|
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