Phytochemical investigation of the roots of Ficus exasperata Vahl. (Moraceae) led to the isolation of a new cinnamic acid derivative, named ficusanol (1) along with eleven known compounds: 3-(6-methoxybenzo[b]furan-5-yl)propenoic acid (2), bergapten (3), oxypeucedanin hydrate (4), marmesin (5), decursinol (6), aridanin (7), betulinic acid (8), maslinic acid (9), a mixture of stigmasterol (10) and β-sitosterol (11), and sitosteryl-3-O-β-D-glucopyranoside (12). The structures of the new compound as well as those of the known ones were established by the means of usual spectroscopic methods: NMR (1H, 13C, DEPT, COSY, HSQC and HMBC) data and HR-ESIMS data. Crude extract and compounds 1, 2, 5, 6 and 7 were evaluated for their radical scavenging potency using DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. Accordingly, the compound 6 showed significant antioxidant activity with IC50 = 25.10 ± 0.91 µg/mL, whereas the other compounds showed only moderate activity at high concentrations. Compounds 2, 6 and 7 were also evaluated for their cytotoxic activity among which the compound 7 exhibited a strong cytotoxic activity with a viability percentage of 3.5% on mouse lymphoma cell line L5178Y. پرونده مقاله

One new coumarinolignan, cleomiscosin F (1) along with ten known compounds namely 3,4-secotirucalla-4(28),7,24-trien-21-hydroxy-21,23-epoxy-3-oic acid (2), 3,4-secotirucalla-4(28),7,24-trien-3,21-dioic acid (3),ceramid A (4),ceramid B (5), mayombensin (6),aridanin (7), stigmasterol and β-sitosterol and their glucosides were isolated from the seeds and roots of Leplaea mayombensis (Meliaceae).Thestructures of the compounds were elucidated based on the interpretation of their spectroscopic data. Some of the isolated compounds (3, 4 and 5) were tested in vitro against bacteria strains Escherichia coli, Bacillus subtilis, Pseudomonas agarici, and Micrococcus luteus. Compound 3 displayed good activity against Bacillus subtilis, Micrococcus luteus, and Pseudomonas agarici with MIC values of 1.7, 2.3 and 9.8µM, respectively; while compound 4 showed significant activity against Micrococcus luteus with MIC value of 11.9µM. پرونده مقاله