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Changes in floristic and vegetation structure in a chronosequence of abandoned gold-mining lands in a tropical Amazon forest. [PDF]

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Garate-Quispe J   +4 more
europepmc   +1 more source
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Various types of tryptamine-iridoid alkaloids from Palicourea acuminata (=Psychotria acuminata, Rubiaceae)

Phytochemistry Letters, 2012
The novel tryptamine-iridoid alkaloid lagamboside was isolated from the methanolic leaf extracts of Palicourea acuminata (Benth.) Borhidi (=Psychotria acuminata Benth.) collected in Costa Rica. Its structure was determined by extensive NMR experiments and is characterized by an unusual N-glycosylation and an iridoid moiety closely related to the less ...
Berger, Andreas   +4 more
openaire   +1 more source

INACTIVATION OF CELL SURFACE RECEPTORS BY PHEOPHORBIDE a, A GREEN PIGMENT ISOLATED FROM Psychotria acuminata

Photochemistry and Photobiology, 1995
Abstract— The inhibition of cytokine and monoclonal antibody binding to cell surfaces caused by an extract of Psychotria acuminata, a medicinal plant used in the traditional medicine of the people of Belize (Central America), was attributed to the presence of pheophorbide a and pyropheophorbide a Since the binding of tumor necrosis factor‐alpha ...
Jan A. Glinski   +10 more
openaire   +2 more sources

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