The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1982
Filed:
Oct. 01, 1979
Eric K Baylis, Stockport, GB;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The present invention provides a process for the production of physiologically-useful .alpha.-aminophosphonic acids and peptide derivatives of the formula: ##STR1## wherein R and R.sub.1 may be the same or different and each can be hydrogen, deuterium or an optionally substituted lower alkyl group, lower alkenyl, lower alkynyl, cycloalkyl, aryl or heterocyclic radical containing one or more oxygen, nitrogen or sulphur atoms and which may be fused to an aromatic ring, a lower alkyl group substituted by a cycloalkyl radical, a lower alkyl group substituted by an aryl radical, a lower alkyl group substituted by a heterocyclic radical as defined above or R and R.sub.1 together form a polymethylene chain optionally interrupted by an oxygen, nitrogen or sulphur atom, or R.sub.1 represents, together with the C(R)--N< residue to which it is attached, the atoms required to complete a heterocyclic radical; and