Anne-Marie Morfaux

Guaianolides from the leaves of Centaurea incana

Abstract Six guaianolides have been isolated from the aerial parts of Centaurea incana from Algeria. They were identified as desoxyrepin, repin or subluteolide, repin monochlorhydrin, acroptilin, janerin and repdiolide triol.

Some alkaloids of Alstonia undulata

Abstract Sixteen indole alkaloids have been identified in the root bark and in the leaves of Alstonia undulata from New Caledonia. They are vincamedine, tetrahydroalstonine, alstonidine, deplancheine, fluorocarpamine, pleiocarpamine, 11-methoxyakuammicine, cabucraline, desoxycabufiline, cabucraline- N (4)-oxide, 11-methoxyakuammicine N (4)-oxide, gentiacraline, plumocraline, vincorine, cathafoline and pericyclivine. Five bis indoles of unknown structure have been isolated. The root bark alkaloid mixture contains gentiacraline the first alkaloid made up of an indole and a pyridine alkaloid.

Alkaloids from tonduzia pittieri

Abstract From the leaves of Tonduzia pittieri ( Alstonia pittieri ), nine alkaloids have been identified. Four are novel: 11-methoxyvincamedine, 11-[10-(11-methoxy-17- epi -vincamajinyl)]-vincorine, 11-[10-(11-methoxyvincamajinyl)]-vincorine, 11-[10-(11-methoxyvincamedinyl)]-vincorine. The five others are known: vincorine, 11-methoxy-17- epi -vincamajine, picrinine, 18-hydroxycabucraline and cabufiline.

Alkaloids of Pterotaberna inconspicua

Abstract Sixteen alkaloids were isolated from the seeds and root-bark of Pterotaberna inconspicua , collected in Zaire. They were voacangine 3-carbonitrile, voacangine, voacristine, 3,6-oxido-voacangine, vobasine, 10-hydroxycoronaridine, 10-hydroxyheyneanine, methuenine, apparicine, tubotaiwine, 16-epi-isositsirikine, 16-epimethuenine, 3,14-dihydroellipticine, an isomer of corynantheol, 16-epimethuenine N -oxide and tetra-hydroellipticine.

Alkaloids from stem-bark ofTonduzia pittieri

Abstract Six alkaloids have been identified from the stem-bark of Tonduzia pittieri ( Alstonia pittieri ) collected in Guatemala. They consist of four new compounds; 11-methoxy-17-epivincamajine, 11-methoxyvincamajine, 18-hydroxycabucraline, 10-methoxy-11-[10-(11-methoxylvincamajinyl)]-cathafoline, and of two known compounds, cabucraline and akuammine.

Alcaloïdes des écorces de tronc et des écorces de racine de L'Hunteria elliotii

Abstract Nine known indole alkaloids were isolated from the stem and root barks of Hunteria elliotii : aspidofractinine, eburnamenine, eburnamine, isoeburnamine, eburnamonine, kopsinine, pleiocarpamine, quebrachamine and vincadifformine, along with o -ethyleburnamine.