(4aα,7aβ,8β,11a(R*))-2,4a,5,6,7,7a,8,9,10,11-decahydro-7a,8-dimethyl-3-(1-methylethyl)-11-oxo-1H-benzonaphthalyl-4-carboxaldehyde 、
2,4-二硝基苯肼 在
硫酸 作用下,
以
乙醇 为溶剂,
反应 0.5h,
以94%的产率得到(4aα,7aβ,8β,11a(R
*))-2,4a,5,6,7,7a,8,9,10,11-decahydro-7a,8-dimethyl-3-(1-methylethyl)-11-oxo-1H-benzo
naphthalyl-4-carboxaldehyde 4-<(2,4-dinitrophenyl)>hydrazone