防己科植物アルカロイド研究 (第145報)
ミヤコジマツヅラフジCyclea insularis (MAKINO) DIELSのアルカロイド その9 塩基の分離
1957 年 77 巻 1 号 p. 69-73
詳細
1957 年 77 巻 1 号 p. 69-73
Detailed studies have already been made on the tertiary nonphenolic bases, insularine (I) and cycleanine (II), in Cyclea insularis (MAKINO) DIELS and their structures have been established. Further systematic isolation of alkaloidal components of this plant afforded isochondodendrine (III) as the tertiary phenolic base, and magnoflorine (IV) and a new kind of crystalline base as water-soluble quaternary bases. The new quaternary base was named cyclanoline. Insularine had not been obtained in crystalline form, either as a free base or as salts, but in the present series of experiments, insularine picrate was isolated as crystals.
