New 3-methyoxyflavones, an iridoid lactone and a flavonol from duroia hirsuta
Investigation of the roots of Duroia hirsuta from Ecuador yielded the iridoid lactone duroin (1) together with 3,7,3', 5'-tetramethoxy-4'-hydroxyflavone (2), 3,7,3'-trimethoxy-4', 5'-dihydroxyflavone (3), and 7,3',5'-trimethoxy-3, 4'-dihydroxyflavone (4) as novel constituents.
Aquino
R
Dipartimento di Scienze Farmaceutiche, Facolta di Farmacia, Universita di Salerno, Piazza V. Emanuele 9, 84084, Penta di Fisciano (SA), Italy, and Centro Tecnologico de Recursos Amazonicos de la Organizacion de Pueblos Indigenos "Fatim.
Tommasi
ND
Tapia
M
Lauro
MR
Rastrelli
L