(2Z,4S)-N-[(2R,3R,5S,6S)-6-{(2E,4E)-5-[(3R,4R,5R,7S)-7-(2-hydrazinyl-2-oxoethyl)-4-hydroxy-1,6-dioxaspiro[2.5]oct-5-yl]-3-methylpenta-2,4-dien-1-yl}-2,5-dimethyltetrahydro-2H-pyran-3-yl]-4-hydroxypent-2-enamide 、
N2-acetyl-N6-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-lysyl-L-valyl-N5-carbamoyl-N-[4-({[(4-nitrophenoxy)carbonyl]oxy}methyl)phenyl]-L-ornithinamide 在
2,6-二甲基吡啶 、
4-二甲氨基吡啶 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 5.0h,
以26%的产率得到N
2-acetyl-N
6-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-lysyl-L-valyl-N
5-carbamoyl-N-[4-({[(2-{[(3R,5S,7R,8R)-8-hydroxy-7-{(1E,3E)-5-[(2S,3S,5R,6R)-5-{[(2Z,4S)-4-hydroxypent-2-enoyl]amino}-3,6-dimethyltetrahydro-2H-pyran-2-yl]-3-methylpenta-1,3-dien-1-yl}-1,6-dioxaspiro[2.5]oct-5-yl]acetyl}hydrazinyl)carbonyl]oxy}methyl)phenyl]-L-ornithinamide