(-)-4,5α-epoxy-14-methoxy-N-methylmorphinan-6-one

(-)-4-methoxy-14-hydroxy-6-keto-N-cyclopropylcarbonylmorphinan

(-)-4,14-dimethoxy-N-methylmorphinan-6-one

(-)-14-methoxy-N-methyl-4-<(1-phenyl-1H-tetrazol-5-yl)oxy>morphinan-6-one

(-)-14-hydroxy-4-methoxymorphinan-6-one