PRDECT-ID: Indonesian product reviews dataset for emotions classification tasks.

Recognizing emotions is vital in communication. Emotions convey additional meanings to the communication process. Nowadays, people can communicate their emotions on many platforms; one is the product review.

beta-Secretase (BACE-1) inhibitory effect of biflavonoids.

Here, we describe amentoflavone-type biflavonoids, which were isolated from natural sources and were found to inhibit beta-secretase (BACE-1). The structure-activity relationship was studied, and compounds 1-8, 10, 17, and 18 showed BACE-1 inhibitory activity. Among these compounds, 2,3-dihydroamentoflavone 17 and 2,3-dihydro-6-methylginkgetin 18 exhibited potent inhibitory effects with IC(50) values of 0.

Phenolic compounds from Cryptocarya konishii: their cytotoxic and tyrosine kinase inhibitory properties.

Two chalcone derivatives, 2'-hydroxychalcone (1) and desmethylinfectocaryone (2), together with five known phenolic compounds infectocaryone (3), cryptocaryone (4), kurzichalcolactone A (5), pinocembrin (6) and trans-N-feruloyltyramine (7), were isolated from the methanol extract of the wood of Cryptocarya konishii. The structures of the new compounds were determined based on the analysis of spectroscopic data, including UV, IR, 1D and 2D NMR, and mass spectra. Evaluation of the cytotoxic and tyrosine kinase inhibitory activities of compounds 1-7 showed that compounds 2-4 strongly inhibited the growth of murine leukemia P-388 cells, whereas compound 4 significantly inhibited the enzyme.

A 2-arylbenzofuran derivative from Hopea mengarawan.

A new 2-arylbenzofuran derivative (diptoindonesin G) (1), along with nine known oligostilbenes, have been isolated and identified from the acetone extract of the tree bark of Hopea mengarawan. The structures of these compounds were determined based on spectroscopic data, including 2D NMR and HREIMS spectra. On cytotoxic evaluation of the isolated compounds against murin leukemia P-388 cells, compound 1 was the strongest in inhibiting the growth of the cells.

A modified oligostilbenoid, diptoindonesin C, from Shorea pinanga Scheff.

A new oligostilbenoid, diptoindonesin C, has been isolated from the tree bark of Shorea pinanga Scheff., along with the two known oligostilbenoids gnetin H and hopeaphenol, and a known coumarin scopoletin. The new oligostilbenoid was moderately active against brine shrimps Artemia salina.