(R)-Α-[N-(叔丁氧羰基甲基)氨基甲酰基]苄胺 、 3,5-trans-1,1-dioxo-3-ethyl-3-butyl-5-phenyl-7-methythio-8-(carboxymethoxy)-2,3,4,5-tetrahydro-1,4-benzothiazepine 在
2,6-二甲基吡啶 、 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 作用下,
以
DCM (Dichloromethane) 为溶剂,
反应 2.0h,
以60%的产率得到3,5-trans-1,1-dioxo-3-ethyl-3-butyl-5-phenyl-7-methythio-8-(N-{(R)-α-[N-(t-butoxycarbonylmethyl)carbamoyl]benzyl}carbamoylmethoxy)-2,3,4,5-tetrahydro-1,4-benzothiazepine