Description
This alkaloid, which is stereoisomeric with epiquinidine (q.v.) is also found in
'quinoidine', the mixture of bases remaining after the removal of the major
alkaloids of Cinchona barks. It is also an oil having [α]
22D + 43.3° (c 0.95, EtOH)
yielding a dihydrochloride, m.p. 196°C (dec.); [α]
21D + 33.3° (c 0.796, EtOH), a
hydrobromide, m.p. 71-7°C; [α]
20D + 32.9° (H20) and the dibenzoyl (+)-tartrate,
m.p. 159°C (dec.); [α]
19D - 22.4° (c 0.8044, EtOH). On catalytic hydrogenation
in the presence of Pd it forms the dihydro derivative which is an oil having
[α]
22D + 31.1° (c 0.9342, EtOH).
References
Thron, Dirscherl., Annalen, 521, 48 (1935)
