3-{(3S,11aS)-2-[(S)-6-tert-Butoxycarbonylamino-2-(2,2-dimethyl-propionylamino)-hexanoyl]-4-oxo-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinolin-3-ylmethyl}-indole-1-carboxylic acid tert-butyl ester 在
盐酸 作用下,
以
1,4-二氧六环 为溶剂,
以100%的产率得到N-{(S)-5-Amino-1-[(3S,11aS)-3-(1H-indol-3-ylmethyl)-4-oxo-1,3,4,6,11,11a-hexahydro-pyrazino[1,2-b]isoquinoline-2-carbonyl]-pentyl}-2,2-dimethyl-propionamide