1,2,3,6-テトラヒドロ-4-ピリジンカルボン酸

説明This base is isolated, together with Guvacine (q.v.) from the nuts of Areca catechu. It is optically inactive and yields crystalline salts: the hydrochloride, m.p. 231°C; aurich1oride, m.p. 198- 200°C and the p1atinich1oride, m.p. 235°C. The alkaloid is faintly acid to litmus and on methylation gives the N-methyl derivative which, on more vigorous methylation yields the dimethyl compound giving a crystalline platinichloride, m.p. 252°C. The above melting points suggest that the base may be mainly Arecaidine (q.v.) but on distillation with Zn dust, it yields products with the characteristic pyrrole reaction.