8β,10β-Epoxy-8-methoxy-2,3-[methylenebis(oxy)]hasubanan-6β,7β-diol 6-(4-hydroxy-3-methoxybenzoate)

A further Stephania alkaloid, this base occurs in the rhizomes of S. abyssinica Walp. It has [α]³²_D + 30° (c 0.90, pyridine) and gives a series if crystalline salts including the hydrochloride, m.p. 2l7-8°C; hydrobromide, m.p. 191-2°C (dec.) and the tria cetyl derivative, m.p. 189-190°C. On hydrolysis, the alkaloid yields 3-methoxy-4-hydroxybenzoic acid.

Kupchan et ai., f. A mer. Chern. Soc., 92, 5756 (1970)