An oil spill is the accidental or intentional discharge of petroleum products into the environment due to human activities. Although oil spills are actually just a little percent of the total world oil pollution problem, they represent the most visible form of it. The impact on the ecosystems can be severe as well as the impact on economic activities. Oil spill cleanup is a very difficult and e...

Resistance to insecticides has persuaded researchers to find new methods to control Culex quinquefasciatus proliferation. Plants may be a source of alternative agents for mosquito control due to ever-growing insecticide resistance in mosquito vectors and environmental imbalance caused by synthetic insecticides. The present study was intended to study the larvicidal activity of selected Cyathea ...

Ten new abietane diterpenoids, aquilarabietic acids A-J (1-10), and a new podocarpane diterpenoid, aquilarabietic acid K (11), were isolated from the petroleum ether and ethanol extracts of Chinese eaglewood. Among them, 3, 9, and 10 are artifacts. Their structures were established on the basis of data from extensive spectroscopic and X-ray diffraction analyses. Bioassay results indicated that ...

OBJECTIVE To investigate the antibacterial activity and phytochemical screening of the aqueous, methanol and petroleum ether leaf extracts of Merremia emarginata (M. emarginata). METHODS The antibacterial activity of leaf extracts of M. emarginata were evaluated by agar well diffusion method against four selected bacterial species. RESULTS The presence of tannins, flavonoids, amino acids, s...

To evaluate the phytochemical activity of different extract of aerial parts of Alysicarpus monilifer belonging to the family Fabacea. The aerial parts were collected and extract prepared from petroleum ether, ethyl acetate and methanol by hot continuous percolation method in a Soxhlet apparatus for 24 hrs. The preliminary phytochemical investigation shows presence of alkaloids, proteins & free ...

Spirooxindoles are important synthetic targets possessing extended biological activity and drug discovery applications.The development of multicomponent reactions designed to produce elaborate biologically active compounds has become an important area of research in organic, combinatorial, and medicinal chemistry. in this Manuscript, a facile and efficient multicomponent synthesis of functional...

The sp3 C–H acetoxylation at the β-position of α,α-disubstituted α-amino acids proceeds smoothly under palladium catalysis in presence PhI(OAc)2. This reaction provides a straightforward synthetic route to non-natural β-acetoxy-α-amino acids. α-aminocyclopropanecarboxylic acid takes place via ring-opening selectively afford an acyclic γ-acetoxy-α,β-unsaturated amino acid.

ologically important products proceeds efficiently through the action of enzymes without requiring protection of reactive functional groups. However, only a few studies of synthetic reactions using unprotected (free) amino acids have been reported. Most of the synthetic transformations to natural products, pharmaceuticals, and chiral auxiliaries have been performed with protected amino acids to...

the aim of this study was to compare the effects of olive leaf extracts and synthetic antioxidant bht at concentration of 1% at increase the shelf life of rainbow trout fillets in light salted and packed at 4±1 °c that index of peroxide (pv), free fatty acids (ffa), thiobarbituric acid (tba), humidity, ph and sensory evaluation of fillets of rainbow trout kept in the refrigerator at the time of...