Obtained from Securinega virosa Pax et Hoffm., this tetracyclic alkaloid forms
light yellow crystals from EtOH and is strongly dextrorotatory with[α]D +
1148° (c 0.4, CHCL3). The salts are well crystalline and include the hydrochloride,
m.p. 211-3°C; [α]D + 388° (c 0.3, EtOH); nitrate, m.p. 211-3°C (dec.);
[α]D + 330° (c 0.3, EtOH) and the methiodide, m.p. 239-241°C (dec).