N1-[(2R,3S)-4-oxo-2-phenyl-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-yl]-N2-(phenylacetyl)-L-alaninamide 、 (2S,3S)-3-amino-2-phenyl-2,3-dihydro-1,5-benzothiazepin-4(5H)-one hydrobromide 、 、
N-[(3,5-difluorophenyl)acetyl]-L-methionine 以to afford the title compound as a 1:1 mixture with the (2S,3S) diastereomer (63 mg), white solid, m.p. 85-90° C的产率得到N2-[(3,5-difluorophenyl)acetyl]-N1-[(2R,3R)-4-oxo-2-phenyl-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-yl]-L-methioninamide