4-Methoxy-1-vinyl-β-carboline, a new alkaloid from <i>Picrasma javanica</i> (Simaroubaceae)

Abstract

Picrasma javanica Bl., a large rain-forest tree of the family Simaroubaceae, occurs in New Guinea. The major bark alkaloid, 4-methoxy-1-vinyl-j3-carboline (I), has been characterized spectroscopically, and its dihydro derivative is identical with the alkaloid crenatine (2) from the Argentinian species Aeschrion crenata Vell. (syn.