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aminocarboxylic acidsaminocarboxylic acids (hydrazinocarboxylic acids) and esters (benzene compounds) Q 0440 -156An Enzymatic Entry to Enantiopure β-Amino Acids.-Optically pure enantiomers of β-amino acids such as (II), which are of interest for the synthesis of peptides or β-lactam antibiotics, are prepared by penicillin acylase catalyzed resolution of their racemic N-phenylacetyl derivatives (I). -(SOLOSHONOK, V. A.; SVEDAS, V. K.; KUKHAR, V. P.; KIRILENKO, A. G.; RYBAKOVA, A. V.; SOLODENKO, V. A.; FOKINA, N. A.; KOGUT, O. V.; GALAEV, I. Y.; KOZLOVA, E. V.; SHISHKINA, I. P.; GALUSHKO, S. V.; Synlett (1993) 5, 339-341; Inst. Bioorg. Petrol Chem., Ukrainian Acad. Sci., 253160 Kiev. Ukraine; EN)

aminocarboxylic acidsaminocarboxylic acids (hydrazinocarboxylic acids) and esters (benzene compounds) Q 0440 -106Biocatalytic Approach to Enantiomerically Pure β-Amino Acids. -The title compounds (III) are obtained in enantiomerically pure form by penicillin acylase catalyzed hydrolysis of the phenylacetyl derivatives (V). -(SOLOSHONOK, V. A.; FOKINA, N. A.; RYBAKOVA, A. V.; SHISHK-INA, I. P.; GALUSHKO, S. V.; SOROCHINSKY, A. E.; KUKHAR, V. P.; SAVCHENKO, M. V.; SVEDAS, V. K.; Tetrahedron: Asymmetry 6 (1995) 7, 1601-1610; Inst. Bioorg. Chem. Petrochem., Ukr. Acad. Sci., Kiev 253160, Ukraine; EN)