Samvisterin, a new natural antiplasmodial betulin derivative from Uapaca paludosa (Euphorbiaceae).

Ethnopharmacological Relevance: Uapaca paludosa is used in African traditional medicine for the treatment of malaria.

Materials And Methods: A bioguided fractionation of U. paludosa trunk bark extracts was performed on the basis of their antiplasmodial activity against Plasmodium falciparum.

Antiprotozoal activities of Millettia richardiana (Fabaceae) from Madagascar.

With at least 60% of the Millettia species (Fabaceae) being in medicinal use, we found it relevant to assess the potential antiprotozoal and antifungal activities of Millettia richardiana. Water and methanol crude extracts of the stem barks from M. richardiana and the six fractions resulting from the fractionation of the methanol extract were tested.

Pyranocoumarin and triterpene from Millettia richardiana.

From the stem bark of a Madagascan endemic plant, Millettia richardiana Baill., lonchocarpenin and betulinic acid were isolated and their structures established by spectroscopic methods. The analysis of dichloromethane fractions suggested the presence of beta-amyrin, lupeol, palmitic acid, linoleic acid and stearic acid.

Mutagenic effect, antioxidant and anticancer activities of six medicinal plants from Burkina Faso.

The antiproliferative activities of six medicinal plant extracts from Burkina Faso were evaluated in order to justify their traditional use for the treatment of cancer. The SOS chromotest method was used in vitro on Escherichia coli PQ37 to evaluate the mutagenic effect of the plant extracts. The DPPH method was used to evaluate the antioxidant activity of each plant.

Analgesic and anti-inflammatory effects of Cassia siamea Lam. stem bark extracts.

Aim Of The Study: The present study was carried out to investigate analgesic and anti-inflammatory activities of Cassia siamea Lam stem bark extracts. We have also determined the cytotoxicity of each extract.

Materials And Methods: C.