I. Gomezmonterrey et al., STEREOSPECIFIC SYNTHESIS OF (2R,3S)-3-AMINO-2-PIPERIDINEACETIC ACID-DERIVATIVES FOR USE AS CONFORMATIONAL CONSTRAINT IN PEPTIDES, Tetrahedron letters, 34(22), 1993, pp. 3593-3594
Catalytic hydrogenation at 40-degrees-C of the beta-ketoester, obtaine
d from Boc-Orn (Z)-OH and ethyl lithioacetate, provides exclusively et
hyl S)-3-tert-butyloxycarbonylamino-2-piperidineacetic acid which when
suitably protected, can be used for peptide synthesis.