甲基溴化镁 、
Diethyl-carbamic acid 2-bromo-4-hydroxy-5-methoxy-4-(3-methyl-butyl)-3-oxo-3,4-dihydro-anthracen-1-yl ester 以
乙醚 为溶剂,
生成 2-Bromo-4-hydroxy-5-methoxy-3-methyl-4-(3-methyl-butyl)-4H-anthracen-1-one 、 (2R,3S,4R)-2-Bromo-3,4-dihydroxy-5-methoxy-3-methyl-4-(3-methyl-butyl)-3,4-dihydro-2H-anthracen-1-one