3-(N-tert-butoxycarbonylamino)-N-[1-[4-(3-thienyl)benzyl]-2,3,4,5-tetrahydro-2-oxo-1H-1-benzazepin-3(R)-yl]-3-methylbutanamide 以89 mg (91%)的产率得到3-Amino-N-[1-[4-(3-thienyl)benzyl]-2,3,4,5-tetrahydro-2-oxo-1H-1-benzazepin-3(R)-yl]-3-methylbutanamide, trifluoroacetate