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Dicorynamine and harmalan-N-oxide, two new ß-carboline alkaloids from Dicorynia guianensis Amsh heartwood

Say Anouhe J.B., Amissa Adima A., bobelé Niamké F., Stien D., Kassi Amian B., Blandinières P.A., Virieux D., Kati-Coulibaly S., Amusant N.. 2015. Phytochemistry Letters, 12 : p. 158-163.

DOI: 10.1016/j.phytol.2015.03.012

The chemical investigations of Dicorynia guianensis heartwood led to the isolation of four new indole alkaloids for the first time in this plant. Compound (1) identified as spiroindolone 2',3',4',9'-tetrahydrospiro [indoline-3,1'pyrido[3,4-b]-indol]-2-one, and compound (3) described as nitrone 1-methyl-4,9-dihydro-3H-pyrido [3,4-b] indole 2-oxide and were isolated for the first time as natural products. ABTS antioxidant activity guided their isolation.

Mots-clés : extrait de bois; bois de coeur; composition chimique; alcaloïde; antioxydant; arbre forestier; produit forestier non ligneux; forêt tropicale humide; brésil; guyana; guyane française; suriname; france; dicorynia guianensis; biogenèse

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