13,14-Dihydro-6-hydroxy-12-methoxy[1,3]benzodioxolo[5,6-c]-1,3-dioxolo[4,5-i]phenanthridine

This alkaloid has been obtained by Gadamer and Winterfeld during a systematic examination of the residues remaining after the isolation of chelidonine from Chelidonum majus L. The base forms colourless prisms on crystallization from EtOH and has [α]_D + 115.8°. It furnishes a crystalline hydrochloride and an aurichloride, m.p. 237-8°C. The O-acetate is amorphous, m.p. 147°C; [α]_D + 55.5°. One methoxyl group, two methylenedioxy groups, one hydroxyl group and a methylimino group are present in the molecule.

Gadamer, Winterfeld., Arch. Pharm., 257,298 (1919)
Garlamer, Winterfeld., ibid, 258, 148 (1920)
Gadamer, Winterfeld., ibid, 262,249 (1924)
Bruchhausen, Bersch., Ber., 63,2520 (1930)
Bruchhausen, Bersch., ibid, 64,370 (1931)