在
DOWEX 50W-X
2 作用下,
以
甲醇 为溶剂,
以94%的产率得到1-O-[2,2-bis[[4-[3-[4-[3-hydroxy-2-(hydroxymethyl)-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propoxy]-4-oxobutanoyl]oxy-2-[[4-[3-hydroxy-2-(hydroxymethyl)-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propoxy]-4-oxobutanoyl]oxymethyl]-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propoxy]-4-oxobutanoyl]oxymethyl]butyl] 4-O-[3-[4-[3-hydroxy-2-(hydroxymethyl)-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propoxy]-4-oxobutanoyl]oxy-2-[[4-[3-hydroxy-2-(hydroxymethyl)-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propoxy]-4-oxobutanoyl]oxymethyl]-2-[(4-oxo-4-prop-2-ynoxybutanoyl)amino]propyl] butanedioate