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Phenolic metabolites from Erythrina species
Antimicrobial and antileishmanial xanthones from the stem bark of Allanblackia gabonensis (Guttiferae)
The phytochemical study of stem bark of Allanblackia gabonensis has resulted in the isolation and characterisation of one new xanthone derivative, named allanxanthone D, together with 10 known compounds, which were evaluated for their activity against Leishmania amazonensis in vitro and antimicrobial activities against a range of Gram negative and Gram positive bacteria.
A prenylated xanthone from Allanblackia floribunda.
Prenylated isoflavanone from Erythrina eriotricha.
Sesquiterpene lactones from Crepis cameroonica (Asteraceae)
Two new sesquiterpene lactones have been isolated from the aerial parts of Crepis cameroonica by means of spectroscopic analysis and the structures and relative configurations of the new compounds were established.
Sigmoidins J and K, two new prenylated isoflavonoids from Erythrina sigmoidea.
- A. E. Nkengfack, T. W. Vouffo, J. C. Vardamides, Z. Fomum, O. Bergendorff, O. Sterner
- ChemistryJournal of natural products
- 1 August 1994
Two new compounds, an isoflavanone named sigmoidin J and a coumestan derivative named sigmaoidin K, have been isolated and characterized from the root bark of the Cameroonian medicinal plant Erythrina sigmoidea.
Antiplasmodial activity of some phenolic compounds from Cameroonians Allanblackia.
- A. Azebaze, J. E. M. Teinkela, E. L. Nguemfo, A. Valentin, A. Dongmo, J. C. Vardamides
- BiologyAfrican health sciences
- 1 September 2015
This work confirms that species of Allanblackia genus are medicinally important plants containing many biologically active compounds that can be used effectively as antiplasmodial.
Antimicrobial and antileishmanial xanthones from the stem bark of Allanblackia gabonensis
The phytochemical study of the stem bark of Allanblackia gabonensis has resulted in the isolation and characterization of one new xanthone derivative, named allanxanthone D, together with ten known…
Terpenoids from Turraeanthus species
- J. C. Vardamides, V. Sielinou, S. H. Akoné, A. E. Nkengfack, B. Abegaz
- ChemistryNatural product communications
- 1 October 2010
Chemical investigation of the root bark of Turraeanthus mannii and the stem of T. longipes resulted in the isolation of two new diterpenes, 13-methyl-labda-8(17)-en-15-oic acid (1) and…
Diterpenoids from Turraeanthus mannii.
Three new compounds, 15-acetoxy-12-hydroxy-16-methyl-labda-8(17),13E-diene (1), ent-labda-8(17),13-dien-15,16-olid-19-oic acid methyl ester (2), and 12-hydroxy-labda-8(17),13-dien-15,16-olide (3),…