rac-(2R,3S,4R,5R,6R)-4-(dimethylamino)-10-hydroxy-8-methoxy-3,5-bis((2-methoxyethoxy)methoxy)-6,13-dimethyl-3,4,5,6,11,12-hexahydro-2H-2,6-epoxytetraceno[1,2-b]oxocine-9,16-dione 在
频哪酮 、
苯甲酸 、 lithium iodide 作用下,
以92%的产率得到rac-(2R,3S,4R,5R,6R)-4-(dimethylamino)-8,10-dihydroxy-3,5-bis((2-methoxyethoxy)methoxy)-6,13-dimethyl-3,4,5,6,11,12-hexahydro-2H-2,6-epoxytetraceno[1,2-b]oxocine-9,16-dione