Six new carotenoids, named corbiculaxanthin (1), corbiculaxanthin 3'-acetate (2), 6-epiheteroxanthin (3), 7',8'-didehydrodeepoxyneoxanthin (4), cyclopyrrhoxanthin (5), and hydratoperidinin (6), were isolated from the corbicula clam (Shijimi in Japanese), Corbicula japonica. Their structures were determined by chemical and spectral data.

Gaseous CO(2) is almost irreversibly absorbed by the room temperature ionic liquid 1-butyl-3-methylimidazolium acetate ([C(4)mim][Ac]) in which it undergoes a chemically irreversible, one electron electrochemical reduction, suggesting a means for the sequestration of the greenhouse gas.

The title com pound, unreported as an insect pheromone com ponent, effectively attracted certain male Gelechiidae (genera Chionodes, M onochroa, Argolam protes) as a sin­ gle chemical. Trap captures with this chemical decreased on addition o f either (E)-3-dodecenyl acetate, (£)-3-tetradecenyl acetate or (Z )-3-tetradecen-l-ol, the sexual attractants of other, closely related species. Results o...

BACKGROUND Coumarin and their derivatives are important and useful compounds with diverse pharmacological properties. In the present study, we evaluated the in vitro cytotoxic activity of new acetoxycoumarin derivatives: 4-(7-methoxy-4-methyl-2-oxo-2H-chromen-3-yl)phenyl acetate (1), 4-(1-methyl-3-oxo-3H-benzo[f]chromen-2-yl)phenyl acetate (2), 4-(6-propionamido-4-methyl-2-oxo-2H-chromen-3-yl) ...

This study aimed to evaluate the dry matter yield, nutrient composition, in vitro and methane produced from Megathyrsus maximus (Ntchisi) Cenchrus purpureus grazed at two grazing frequency (3 6-week, (GF)) with plant spacing (0.5 m x 1 m). The design of this experiment was split-split plot 2 factorial arrangement. Milled samples were analyzed for chemical In digestibility (IVDMD), total gas pro...