The isolation of one tertiary and thirteen quaternary alkaloids from Hunteria eburnea is described. Three of these are identified as yohimbol methochloride (I), dihydrocorynantheol methochloride (II), and akuammicine methochloride (III). The first example of a new class of alkaloids is given which occurs in the form of its diastereoisomeric quaternary Nb salts, hunterburnine α-and β-methochlorides (IV and V). The structure of a third 5-hydroxyindole, huntrabrine methochloride (VI), is proposed from degradative work. © 1963, American Chemical Society. All rights reserved.