Benzyl-2 tropanes et γ-pyranotropanes, alcaloïdes de Knightia strobilina

Benzyl-2 tropanes et γ-pyranotropanes, alcaloïdes de Knightia strobilina Benzyl-2 pseudotropanes et dihydro γ-pyranotropanes, alcaloïdes de Knightia strobilina SUR LES ALCALOÏDES MINEURS DE<i>KNIGHTIA DEPLANCHEI1</i> Tropane alkaloids from the leaves and stem bark of Erythroxylon alaternifolium and Erythroxylon rotundifolium Tropane alkaloids from the leaves and stem bark of Erythroxylon alaternifolium and Erythroxylon rotundifolium Tropane alkaloids from Schizanthus litoralis New tropane alkaloids, (+)-(3R,6R)-3α-Acetoxy-6β-hydroxytropane and (+)-2α-Benzoyloxy-3β-hydroxynortropane, from Peripentadenia mearsii (Euphorbiaceae) Alcaloides Tropaniques de Crossostylis Sp. Alkaloids of Erythroxylum cuneatum, E. ecarinatum and E. australe Tropane alkaloids from Erythroxylum zeylanicum O.E. Schulz (Erythroxylaceae)