THE ALKALOIDS OF FUMARIACEOUS PLANTS: XI. TWO NEW ALKALOIDS, CORLUMINE AND CORLUMIDINE, AND THEIR CONSTITUTIONS

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Abstract
A new alkaloid, corlumine, has been isolated from Corydalis scouleri, C. sibirica and Dicentra cucullaria. Chemical examination disclosed its isomerism with adlumine with which, furthermore, it is structurally identical. It differs from the latter only in the disposition of the substituents about the two asymmetric C-atoms, but it is not the optical antipode of adlumine. Corlumidine is O-desmethyl corlumine and has been found only in C. scouleri, and on methylation with diazomethane yields corlumine. The free hydroxy-group is probably present in the 7-position of the isoquinoline nucleus.

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