par Goldblatt, A.;Hootele, Claude ;Pecher, Jacques
Référence Phytochemistry, 9, 6, page (1293-1298)
Publication Publié, 1970
Article révisé par les pairs
Résumé : Voacangine (3), ibogaine (2), voacamine (7), vobtusine (10), voacristine (1), iboluteine (4), vobasine (6), 18′-decarbomethoxyvoacamine (9) and voaluteine (5) are shown to be present in the crude extract from the bark of Voacanga thouarsii, Roem. et Schult. var. obtusa Pichon. All are known compounds. The absolute configuration C-17 R is proposed for the spirannic carbon atom of the pseudoindoxyle (5). Applied to voacristine (1), Brewster's method shows C-20 to have the S-configuration. © 1970.