The Uncaria genus is an important source of medicinal natural products, particularly
alkaloids and triterpenes. The collected information is an attempt to cover the more recent …

Abstract Ethnopharmacological relevance The genus Uncaria belongs to the family
Rubiaceae, which mainly distributed in tropical regions, such as Southeast Asia, Africa and …

Medicinal plants are well-known in affording clinically useful agents, with rich medicinal
values by combining with disease targets through various mechanisms. Plant secondary …

Oxindole alkaloids are a monoterpene group of alkaloids that exhibits an oxindole moiety (N–
C═ O) in ring B of the structure with either corynantheoid or ajmalicinoid analogues …

Recent reviews include a general one on indolocarbazoles, l and a specific one devoted to
9-hydroxyellipti~ ine.~ Another review, in which the sources, antitumour activity, and clinical …

The novel tryptamine-iridoid alkaloid lagamboside was isolated from the methanolic leaf
extracts of Palicourea acuminata (Benth.) Borhidi (= Psychotria acuminata Benth.) collected …

The isomerization of the spiro oxindole alkaloids mitraphylline, isomitraphylline,
pteropodine, isopteropodine, speciophylline and uncarine F in water has been studied at …

Phytochemical investigation on the aerial parts of Uncaria perrottetii led to the isolation of
three pentacyclic oxindole alkaloids uncarine A or isoformosanine (1), uncarine E or …

The alkaloids of Uncaria tomentosa micropropagated plantlets and root cultures were
isolated and identified by NMR and mass spectrometry. Plantlets yielded pteropodine (1) …

The single‐crystal X‐ray structures of speciophylline, mitraphylline, and rhynchophylline,
oxindole alkaloids from the Peruvian climbing vine Uncaria tomentosa (Rubiaceae), were …