Russian workers have described this pyranoquinoline alkaloid which occurs in
Hapiophyllum foliosum Vved. The base crystallizes from MeOH as colourless
rods and forms a series of crystalline salts and derivative, e.g. hydrochloride,
m.p. 78-80°C; sulphate, m.p. 196-7°C; the bromo derivative, m.p. 186-8°C;
the N-acetyl compound, m.p. 155-6°C and the N-methyl derivative with m.p.
121°C.
Fakhritidinova, Sidyakin, Yunusov, Uzbek Khim. Zh., 4, 41 (1963)
Bowman, Grundon, J. Chem. Soc., C, 1084 (1966)
Rashkes, Faizutidinova, Yunusov, Khim. Prir. Soedin., 6, 107 (1970)
