{(3aR,4S,5aR,11R,11aR,11bS)-6-[1-(tert-Butyl-dimethyl-silanyloxy)-meth-(E)-ylidene]-7-methoxy-2,2,4-trimethyl-3a,5a,6,11,11a,11b-hexahydro-4H-1,3,5-trioxa-cyclopenta[a]anthracen-11-yl}-(2,4-dinitro-phenyl)-amine 在
ruthenium trichloride 、
sodium periodate 作用下,
以
四氯化碳 、
水 、
乙腈 为溶剂,
反应 0.5h,
以78%的产率得到(3aR,4S,5aR,11R,11aS,11bS)-11-(2,4-Dinitro-phenylamino)-7-methoxy-2,2,4-trimethyl-3a,11,11a,11b-tetrahydro-4H,5aH-1,3,5-trioxa-cyclopenta[a]anthracen-6-one