p. 14527 - 14531
(2019/11/03)p. 280 - 283
(2007/10/02)p. 1691 - 1694
(2007/10/02)(S)-alanyl-(S)-proline tert-butyl ester
(R)-ethyl 2-bromo-4-phenylbutyrate
2-oxo-4-phenylbutanoic acid ethyl ester
[1(S)-(ethoxycarbonyl)-3-phenylpropyl]-(S)-alanine
proline tert-butyl ester