AIM OF STUDY The ethnobotanical study surveyed the different types of medicinal plants used for the treatment of malaria in the south-western region of Nigeria. MATERIALS AND METHODS Information was collected by interviewing indigenous people, using a semi-structured questionnaire. Collected plant samples were identified and authenticated in Forestry Research Institute of Nigeria, Ibadan, Nig...

Alstonia boonei De Wild is a herbal medicinal plant of West African origin, popularly known as God's tree or "Onyame dua". Within West Africa, it is considered as sacred in some forest communities; consequently the plant parts are not eaten. The plant parts have been traditionally used for its antimalarial, aphrodisiac, antidiabetic, antimicrobial, and antipyretic activities, which have also be...

The bark of some medicinal trees (Alstonia boonei, Pycnanthus angolensis, Anacardium occidentale, Mangifera indica, Khaya iroresis, Nauclea diderichii, Morinda lucida and Bridelia micrantha) found in Nigeria were analysed for mineral composition and phytochemical screening. The mineral composition were determined and found to contain some elements such as sodium, potassium, calcium, magnesium, ...

The 80% ethanol extract of Alstonia yunnanensis afforded five new monoterpenoid indole alkaloids: 11-hydroxy-6,7-epoxy-8-oxo-vincadifformine (1), 14-chloro-15-hydroxy- vincadifformine (2), perakine N(4)-oxide (3), raucaffrinoline N(4)-oxide (4), and vinorine N(1),N(4)-dioxide (5), together with three known compounds: 11-methoxy-6,7-epoxy-8-oxo- vincadifformine (6), vinorine N(4)-oxide (7) and v...