A5101645752- Phytochemistry and Biological Activities
- Nanoparticles: synthesis and applications
- Essential Oils and Antimicrobial Activity
- Medicinal Plants and Neuroprotection
- Advanced Nanomaterials in Catalysis
- Ethnobotanical and Medicinal Plants Studies
- Nanomaterials for catalytic reactions
- Botanical Research and Chemistry
- Gold and Silver Nanoparticles Synthesis and Applications
- Silymarin and Mushroom Poisoning
- Plant chemical constituents analysis
- Chemical synthesis and alkaloids
- Phytochemistry and biological activity of medicinal plants
- Phytochemicals and Medicinal Plants
- Phytochemicals and Antioxidant Activities
- Laser-Ablation Synthesis of Nanoparticles
- Bee Products Chemical Analysis
- Natural product bioactivities and synthesis
- Natural Antidiabetic Agents Studies
- Phytochemistry and Bioactivity Studies
- Phytochemistry and Bioactive Compounds
- Fungal Biology and Applications
- Pharmacological Effects of Natural Compounds
- Plant Growth Enhancement Techniques
- TiO2 Photocatalysis and Solar Cells
Gomal University
2014-2023
Beijing University of Chemical Technology
2014-2019
University of Karachi
2007
A new lignan rhamnoside, racemiside (1), has been isolated from the ethyl acetate-soluble fraction of Cotoneaster racemiflora, along with scopoletin (2), 7,8-dimethoxy-6-hydroxycoumarin (3), 3,3′,4′-tri-O-methylellagic acid (4), and cereotagloperoxide (5), reported for first time this species. All them showed profound antioxidative activities in DPPH assay.
A phytochemical investigation on the ethyl acetate soluble fraction of Lonicera quinquelocularis (whole plant) led to first time isolation one new phthalate; bis(7-acetoxy-2-ethyl-5-methylheptyl) phthalate (3) and two benzoates; neopentyl-4-ethoxy-3, 5-bis (3-methyl-2-butenyl benzoate (4) neopentyl-4-hydroxy-3, (5) along with known compounds bis (2-ethylhexyl (1) dioctyl (2). Their structures were established basis spectroscopic analysis by comparison available data in literature. All (1–5)...
Two new furocarbazole alkaloids, 3-formyl-6,7-dimethoxy-furo[1,2]carbazole (1) and methyl-6,7-dimethoxy-furo[1,2]carbazole-3-carboxylate (2), along with two known carbazole 3-formyl-2-hydroxy-7-methoxycarbazole (3) methyl 2,7-dimethoxycarbazole-3-carboxylate (4) were isolated from the ethyl acetate soluble fraction of Lonicera quinquelocularis. Their structures established on basis spectroscopic analysis.
Three new α-glucosidase inhibitory benzo-isochromenes were isolated from the chloroform fraction of Datura stramonium. Their structures established with help modern spectroscopic techniques and assigned names as 1,6,8-triimethoxy-2-methyl-3,4-dihydrobenzoisochromene-5,10-diol, 3,6-dimethoxy-5-hydroxy-4-methylbenzoisochromene-9,11-dione demethylflavasperon for compounds 1-3 respectively. The inhibiting activity compound 2 showed strong inhibition an IC50 value 27.5 µM, while 1 exhibited...
Antimicrobial activity of five compounds isolated from Ranunculus muricatus, namely, Tricin7-O-β-D-lucopyranoside (1), protocatechuyl aldehide (2), isoscopoletin (3), anemonin (4), Β-sitoseterol (5) were tested against two human Gram-positive bacteria (Staphylococcus aureus, Micrococcus luteus) and four Gram-negative ones (Escherichia coli, Pseudomonas aeruginosa, Enterobacter cloacae, Klebsiella Pneumoniae). All the isolated, fungal strain Aspergilus niger. The structures have been...
Three new aromatic compounds named fistuloates: A (3-butyl-6-ethylnonyl-3-(1-phenylethyl) benzoate), B (3-(6- tert-butyl-1-ethoxy-5-ethyl-4-methylnonyl)-5-ethylbenzoic acid isobutyl ester) and C (4,5-diethoxy-2-propylbenzoic 7-(6-pentyltetrahydropyran-2-yl)-heptyl were isolated from the ethyl acetate soluble fraction of Cassia fistula Linn. The structural formulae A–C established through interpretation their spectral data. Compounds exhibited significant antioxidant properties in...
The phytochemical studies and biochemical screening of various fractions, that is, hexane, chloroform, ethyl acetate, butanol aqueous (F1 to F5) obtained from the medicinal plant Mallotus phillipensis were studied. presence alkaloids, flavonoids, glycosides, phenols, quinines, saponins, tannins terpenoids confirmed by performing chemical tests using standard protocols. infrared (IR) spectroscopic analysis revealed oxygenated carbo-nitro functionalities, mainly in polar fractions plant. All...
Terminalia arjuna possesses significant cardioprotective, antidiabetic and antioxidant properties as these are described in Ayurveda. In the present study, three flavonoids were isolated through separation chromatographic purification of whole plant material T. arjuna. Spectroscopic characterization identified one them a new flavonoid "Terminalone A (1)" two known i.e., 6-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-4H-chromen-4-one (2) 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one (3)....
Phytochemical investigation on pathogenic fungus Cylindrocarpon destructans isolated form Meconopsisgrandis plant led to the isolation of two new isochromene derivatives namely, 6,8-dimethoxy-3-methyl-3,4-dihydrobenzoisochromene-4,9,10-triol (1) and 3,5,6-trihydroxy-4-methylbenzoisochromene-9,11-dione (2) along with four known compounds (3-6).The structures these were elucidated by 1D 2D NMR mass spectroscopic data analysis.The evaluated for cytotoxic activity.The 1-4 showed good inhibition...