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Root bark powder of Vepris nobilis Mziray (family Rutaceae) collected from Mukura Sub-county, Ngora District, Eastern Uganda, about 300 km from the Capital City Kampala was extracted with 70% ethanol. Phytochemical analyses was carried out as well as in vivo anti inflammatory animal tests. The GC–MS analysis identified 37 compounds in the extract including fatty acids (45.08%), sesquiterpenes (40.38%), furaquinoline alkaloids (10.93%), a phenylpropanoid (2.37%) and a triterpenoid (1.31%). Interestingly, it revealed that at 400 and 600 mg of extract / kg of body weight, formalin induced paw oedema in mice was inhibited much better than by 25 mg of Diclofenac sodium /kg body weight. It was concluded that ethanolic root bark extract of V. nobilis has important phytochemicals that need to be evaluated for anti-inflammatory activity as potential lead compounds for anti-inflammatory drug development.

Teclea nobilis is a medicinal plant widely used to treat oral pathogens, gonorrhea, fever, analgesics, asthma, joint pains, pneumonia, and intestinal worms in Ethiopia. Anticipated by these claims, column chromatographic separation of the roots extract of T . nobilis led to the isolation of eight alkaloids (1-8). The structures of the isolated compounds were identified based on their NMR (1D and 2D) spectral data analysis and comparison with reported literature data. In-silico molecular docking analysis of the isolated compounds were performed against Staphylococcus aureus DNA Gyrase (PDB ID: 2XCT) and human topoisomerase IIβ DNA (PDB ID: 3QX3) by using AutoDock Vina. ADMET analysis were performed by SwissADME, PreADMET, and OSIRIS Property predictions. The study revealed that the isolated compounds exhibited promising binding affinity to DNA gyrase, especially with compound 5 forms a stable drug-protein complex. Whereas the ADME and drug-likeness analysis revealed that compound 5 is less absorbed from the gastrointestinal tract, crossblood brain barrier and a P-glycoprotein substrate. This indicated that compound 5 could be a good candidate as anticancer agent provided that in vivo analysis done for more confirmation., (© 2022 Walter de Gruyter GmbH, Berlin/Boston.)

Abstract: A phytochemical study on the alkaloids from Teclea nobilis yielded five furoquinolines, including the new acetylmontrifoline. The structures were elucidated from extensive 2D-NMR and MS experiments. The absolute configuration of the chiral center of montrifoline and of acetylmontrifoline was established as R by analysing the Mosher''s derivatives and chemical modifications, respectively. All the five furoquinolines showed weak in vitro antiplasmodial activity against Plasmodium falciparum, montrifoline being moderately active (56μg/ml) and not cytotoxic. [Copyright &y& Elsevier]

Five new furoquinoline alkaloids, namely tecleabine (1), tecleoxine (2), isotecleoxine (3), methylnkolbisine (4) and chlorodesnkolbisine (5) were isolated from the aerial parts of Teclea nobilis, together with seven known furoquinoline derivatives; one acridone alkaloid, and one known flavanone. The structures of the alkaloids 1–5 were established by 1D and 2D NMR spectral data, including COSY, HMQC and HMBC experiments, as well as HRMS. [Copyright &y& Elsevier]