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Two new farnesyl hydroquinones named ganomycin A (1) and ganomycin B (2) were isolated from Ganoderma pfeifferi, and their structures were elucidated by spectroscopic methods. Both carboxylic acids exhibit antimicrobial activity against several Gram-positive and Gram-negative bacteria.
The present research study deals with the evaluation of sixty four methanolic and aqueous extracts of thirty Yemeni plants used in traditional medicine for their in vitro antiproliferative activity against three human cancer cell lines in a microtiter plate assay based on cellular staining with crystal violet, for their antimicrobial activity against… (More)
CONTEXT The role of natural products as a source for remedies has been recognized since the beginning of mankind. Nevertheless, a minority of folkloricly used medicinal plants have been evaluated for their pharmacological activities. OBJECTIVES The purpose of this study is to evaluate 33 selected Yemeni plants for their in vitro anticancer, antimicrobial,… (More)
Ganodermadiol, lucidadiol and applanoxidic acid G were isolated as first triterpenes from the European Basidiomycete Ganoderma pfeifferi. The compounds show antiviral activity against influenza virus type A and HSV type 1.
BACKGROUND Recent years have witnessed that there is a revival of interest in drug discovery from medicinal plants for the maintenance of health in all parts of the world. The aim of this work was to investigate 26 plants belonging to 17 families collected from a unique place in Yemen (Soqotra Island) for their in vitro anticancer, antimicrobial and… (More)
Methanol and hot-aqueous extracts of 25 different plant species, used in Yemeni traditional medicine and growing, partly as endemic plants, on the island Soqotra have been investigated for their antiviral activity. In addition, the phytochemical identification of the main chemical constituents was performed. The extracts were assayed in two in vitro viral… (More)
The traditional medicine still plays an important role in the primary health care in Yemen. The current study represents the investigation of 16 selected plants, which were collected from different localities of Yemen. The plants were dried and extracted with two different solvents (methanol and hot water) to yield 34 crude extracts. The obtained extracts… (More)
Developing countries, where malaria is one of the most prevalent diseases, still rely on traditional medicine as a source for the treatment of this disease. In the present study, six selected plants (Acalypha fruticosa, Azadirachta indica, Cissus rotundifolia, Echium rauwalfii, Dendrosicyos socotrana and Boswellia elongata) commonly used in Yemen by… (More)
The ethanol extract of Grewia tenax (GTE) fruit was tested for possible efficacy against carbon tetrachloride (CCl(4)) induced liver toxicity in Wistar albino rats. GTE at doses of 250 and 500 mg/kg were administered orally to CCl(4)-treated rats. Acute toxicity test and sleeping time determination were done with mice. The results showed that oral… (More)
In the present study, the two endemic Soqotraen plants Boswellia elongata and Jatropha unicostata were investigated for their anti-inflammatory, antinociceptive and antioxidant potential. To assess the anti-inflammatory and antinociceptive activities, two concentrations of each extract (200 and 400mg/kg, p.o.) were tested in carrageenan-induced rat paw… (More)