Dicentra cucullaria

From the plants Gorydalis ochotensis and Dicentra cucullaria, the alkaloids ochotensine and ochotensimine (methyl ether of ochotensine) were isolated. Hofmann degradation (342, 344) in connection with UV, IR, and NMR spectroscopy and mass spectrometry, and X-ray analysis... 

In Ottawa he began a systematic investigation of Fumariaceous plants for their alkaloid content. By developing new methods of separation of the alkaloids he found many new bases of the aporphine, benzophenanthridine, phthalideisoquinoline, protopine, and protoberberine ring systems. Three new classes of isoquinoline alkaloids also owe their discovery to this work. In his examination of Dicentra cucullaria he found the alkaloid cularine, determined its structure, and thereby demonstrated that it belonged to a new ring system. In the same period he isolated many of the alkaloids that are now known as the spirobenzylisoquinolines. Some 25 years later he was... 

Bicuculine an alkaloid from Dicentra cucullaria, Adlumia fimgosa and several species of Corydalis B. is a neurotoxin and a convulsant, which acts as a specific antagonist of the neurotransmitter, 4-Aminobu-tyric acid (see). 

Corydalis. Squirrel corn turkey corn- Dried tuber of Dicentra (Bicuculla) cucullaria (L.) Bemh, or of Dlcentra canadensis (DC.) Walp., Fumariaceae. Habit. Ontario to Kentucky and Missouri. Conjtir. Corydaline, bulbocapnine, isocorydme, corytuberine, corycavine, corybulhine, corydine. fumaric acid, acrid resin, protopine. 

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