(6R,6aS,14aR)-methyl 1,6,8,14a-tetrahydroxy-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 、
4-氟苯基溴化镁 在
氮气 、
水 、
二氯甲烷 、 Brine 、
Sodium sulfate-III 、 crude material 、
acetonitrile-water 、
三氟乙酸 作用下,
以
四氢呋喃 为溶剂,
反应 0.67h,
以isocratic) to afford (6R,6aS,14aR)-methyl 12-(4-fluorophenyl)-1,6,8,12,14a-pentahydroxy-11-((2S,3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-3-methyl-7,9,14-trioxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracene-2-carboxylate as a diastereomer A (13 mg, 7%)的产率得到(6R,6aS,14aR)-methyl 12-(4-fluorophenyl)-1,6,8,12,14a-pentahydroxy-11-((2S,3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-3-methyl-7,9,14-trioxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracene-2-carboxylate