This alkaloid, isolated from Dolicothele longimamma, differs from the
accompanying bases in not having an isoquinoline structure. Instead, it belongs
to the phenethylamine class of alkaloids. It is extracted from the EtOH fraction
as the crystalline hydrochloride which forms colourless needles with m.p. 144-
6°C. This salt is optically active with a specific rotation of [α]25D - 76° and gives
an ultraviolet spectrum in EtOH having absorption maxima at 225, 274 and 281
nm. The free base, prepared from the hydrochloride by standard chemical methods
cannot be obtained in a crystalline form.
Ranieri, McLaughlin,J. Org. Chem., 41, 319 (1976)
