tert-butyl N-[(2S)-1-[2-(5-acetamido-2-methoxybenzoyl)hydrazinyl]-6-[4-[7-[4-[[(5S)-6-[2-(5-acetamido-2-methoxybenzoyl)hydrazinyl]-5-[(2-methylpropan-2-yl)oxycarbonylamino]-6-oxohexyl]amino]-4-oxobutoxy]-3-[(2,2-dimethyl-1,3-dioxolan-4-yl)methylamino]naphthalen-2-yl]oxybutanoylamino]-1-oxohexan-2-yl]carbamate 在
Amberlyst
TM 15 resin 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以30%的产率得到tert-butyl N-[(2S)-1-[2-(5-acetamido-2-methoxybenzoyl)hydrazinyl]-6-[4-[7-[4-[[(5S)-6-[2-(5-acetamido-2-methoxybenzoyl)hydrazinyl]-5-[(2-methylpropan-2-yl)oxycarbonylamino]-6-oxohexyl]amino]-4-oxobutoxy]-3-(2,3-dihydroxypropylamino)naphthalen-2-yl]oxybutanoylamino]-1-oxohexan-2-yl]carbamate