Conopharyngine pseudoindoxyl, a new alkaloid from Tabernamontana pachysiphon Stapf, var cumminsii (Stapf.) H. Huber

Abstract

A chlorform extract of the residue, remaining after extraction of the bases obtained from the leaves of T. pachysiphon var cumminsii* with ether, has been shown to contain the alkaloids conopharyngine, 20-hydroxyconopharyngine and conopharyngine pseudo-indoxyl, and two alkaloids of as yet unknown structure.

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