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).
Nakano, Yang, Terao., Chern. & Ind., 1651 (1962)
Nakano, Yang, Terao., ibid, 1034 (1963)
Nakano, Yang, Terao.,J. Org. Chern., 28,2619 (1963)
Nakano, Yang, Terao., Tetrahedron, 19,609 (1963)
Saito et aI., Chern. & Ind., 689 (1963)
Nakano et aI., ibid, 1763 (1963)
