Phosphinic acid analogs of glutamate

A compound according to the following formula (I)

• wherein R is a substituted alkyl, benzyl or allyl residue selected from the group consisting of nonyl;
• 333-trifluoro-propyl;
• 2-methyl-4-phenyl-butyl;
• 4-trifluoromethyl-phenyl;
• pentafluorophenyl;
• 4-fluoro-phenyl;
• naphthalene-2-yl;
• biphenyl-2-yl;
• 5,5,7,8,8-pentamethyl-5,6,7,8-tetrahydro-naphthalene-2-yl;
• 5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-yl;
• 1,1,3,3-tetramethyl-indan-5-yl;
• styryl;
• 2,6-dimethyl-heptyl;
• 2-(4-tert-Butyl-phenyl)-1-methyl-vinyl;
• 2-(4-isopropyl-phenyl)-1-methyl-vinyl;
• 1-(1,7,7-Trimethyl-bicyclo[2.2.1]hept-2-yl)-ethyl;
• 2-(4-isobutyl-phenyl)-1-methyl-vinyl;
• 2-(2-isopropyl-phenyl)-1-methyl-ethenyl;
• 2-phenyl-ethyl;
• cyclohexyl-methyl;
• 2,2-dimethyl-propyl;
• 2-(pentafluorophenyl)-ethyl;
• 3-phenyl-propyl;
• heptyl;
• 4-isopropyl-cyclohex-1-enyl;
• decyl;
• hexyl;
• trans-4-isopropyl-cyclohexyl;
• 5-ethyl-2-methyl-heptyl;
• 2,6,10-trimethyl-undecyl;
• 1-methyl-3-(2,2,3-trimethyl-cyclopentyl)-propyl;
• and octyl.