Phosphono/biaryl substituted dipeptide derviatives

Abstract From the Canadian patent

Phosphono/biaryl substituted dipeptide derivatives Abtract of the Disclosure, Novel N-phosphonomethyl-biaryl substituted dipeptide derivatives of forrnula I wherein R and R' represent independently hydrogen carbocyclic aryl, 6-tetrahydronaphthyl 5-indanyl, acyloxymethyl or acyloxymethyl monosubstituted on methyl carbon by C1-C20-alkyl, by C5-C7-cycloalkyl by aryl or by aryl-lower alkyl; A, represents a direct bond lower alkylene, phenylene or cyclohexylene; m represents I or zero, provided that m represents 1 when A is a direct bond; R1 represents phenyl phenyl, substituted by one to three substituents selected from lower alkyl hydroxy, lower alkoxy, lower alkanoyloxy halogen, cyano, …