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

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

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

N-(4-benzyloxycarbonylamidino-benzyl)-2-[(S)-4-(2,5-dimethoxy-benzenesulfonylamino)-3-oxo-morpholin-2-yl]-acetamide acid benzyl ester

N-(4-benzyloxycarbonylamidino-benzyl)-2-[(S)-4-(4-chloro-2,5-dimethyl-benzenesulfonylamino)-3-oxo-morpholin-2-yl]-acetamide acid benzyl ester