7-(benzyloxy)-2-(3,4-bis(benzyloxy)phenyl)-5-hydroxy-4-oxo-4H-chromen-3-yl 7-oxo-7-(2-oxo-2-(phenylamino)ethylamino)heptanoate 在
5%-palladium/activated carbon 、
氢气 作用下,
以
1,4-二氧六环 、
乙醇 为溶剂,
以43%的产率得到2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-4H-chromen-3-yl 7-oxo-7-(2-oxo-2-(phenylamino)ethylamino)heptanoate