抄録
The structural formula (III) proposed for stephanine by the present writer had been questioned by Manske from the point of biogenesis of aporphine-type bases and, therefore, 1-methoxy-5, 6-methylenedioxyphenanthrene (II) was prepared by the Pschorr's phenanthrene synthesis. It was thereby proved beyond doubt that (II) was completely identical with the phenanthrene compound obtained by the Hofmann degradation of stephanine. From such experimental evidences, the writer again forwards the structural formula 1-methoxy-5, 6-methylenedioxyaporphine (III) for stephanine.
