Diphosphonic acid derivatives and their manufacture and use

Details Diphosphonic acid derivatives and their manufacture and use Diphosphonic acid derivatives and their manufacture and use

C - Chemistry, Metallurgy

07

F

260/458.2, 260/5

C07F 9/38 (2006.01) C07F 9/40 (2006.01)

Patent

CA 1222252

ABSTRACT Novel diphosphonic acid derivatives of the general formula I Image (I) (in which X represents cyano, 2-cyanoethyl or 3-amino- propyl and Y represents H or X and Y together re- present dimethylaminomethylene and R1 to R4 each represents H or C1-C4-alkyl, X not representing cyano when R1 to R4 each represents ethyl) and physiologi- cally tolerable salts of such compounds containing a free acid group, and processes for their manufacture.

431700

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