N-(4-benzyloxycarbonylamidino-benzyl)-2-[(S)-3-oxo-4-phenethylamino-morpholin-2-yl]-acetamide acid benzyl ester

N-(4-benzyloxycarbonylamidino-benzyl)-2-[4-diphenylamino-3-oxo-morpholin-2-yl]-acetamide acid benzyl ester

[(S)-3-oxo-4-(3-phenyl-propylamino)-morpholin-2-yl]-acetic acid

[(S)-4-benzylamino-3-oxo-morpholin-2-yl]-acetic acid methyl ester

[(S)-3-oxo-4-(3-phenyl-propylamino)-morpholin-2-yl]-acetic acid methyl ester