(6R,6aS,14aR)-methyl 1-(2-(benzyloxy)-2-oxoethoxy)-6,8,14a-trihydroxy-11-((2S,3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-3-methyl-7,9,12,14-tetraoxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracene-2-carboxylate 在
钯 氢气 、
acetonitrile-water 、
三氟乙酸 作用下,
以
四氢呋喃 为溶剂,
25.0 ℃
、13.51 MPa
条件下,
反应 1.0h,
以to afford 2-((6R,6aS,14aR)-6,8,14a-trihydroxy-11-((3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-2-(methoxycarbonyl)-3-methyl-7,9,12,14-tetraoxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracen-1-yloxy)acetic acid (13 mg, 66%) as an orange solid的产率得到2-((6R,6aS,14aR)-6,8,14a-trihydroxy-11-((3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-2-(methoxycarbonyl)-3-methyl-7,9,12,14-tetraoxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracen-1-yloxy)acetic acid