Description
This sulphur-containing alkaloid has been isolated from Nuphar luteurn and shown to have the above structure. It yields well-crystalline salts with mineral
acids, e.g. the dihydrobromide which forms long prisms of the tetrahydrate from
aqueous EtOH, m.p. l46-9°C; diperchlorate, m.p. 320°C (dec.) and the
methiodide, m.p. 240-2°C.
References
Achmatowicz, Wrobel., Tetrahedron Lett., 129 (1964)
Achmatowicz et ai., ibid, 927 (1964)
Crystal structure:
Birnbaum., Tetrahedron Lett., 4149 (1965)
