A new benzophenanthridine alkaloid from stem bark of and its biological activities.

A new benzophenanthridine alkaloid 6-butanoyldihydrochelerythrine and five known alkaloids 6-acetonyldihydronitidine , 6-acetonyldihydrochelerythrine , isocorydine , (O)-methyltembamide , N-(4-methoxyphenethyl)benzamide were isolated from the stem barks of . These structures were elucidated by 1D, 2D NMR spectroscopy and by mass spectrometry. This is the first time that compounds were identified from and the first time that compounds and were identified from the genus .

Effect of NPK-SRFS on the Growth, Yield and Essential Oil Composition of Basil ( L.).

<b>Background and Objective:</b> Basil (<i>Ocimum basilicum</i> L.), an aromatic herb, is considered one of the most important crops with essential oils as well as other bioactive compounds. Basil leaves have tremendous pharmaceutical benefits and are used for foods.

Essential Oils of Polyalthia suberosa Leaf and Twig and Their Cytotoxic and Antimicrobial Activities.

Essential oils from the leaf and twig of Polyalthia suberosa (Roxb.) Thwaites were analyzed using GC/MS/FID. A total of sixty-three constituents were namely identified accounting for 96.

PTP1B and α-glucosidase inhibitors from Selaginella rolandi-principis and their glucose uptake stimulation.

As part of an ongoing search for new protein tyrosine phosphatase 1B inhibitors and glucose uptake stimulators from nature, a new coumarin, selaginolide A (1) and four known isoflavones (2‒5) were isolated from the ethanol extract of a Vietnamese medicinal plant Selaginella rolandi-principis. The chemical structures of the isolates were elucidated by extensive analysis of spectroscopic and physicochemical data. Compounds 3‒5 have been identified from Selaginella genus for the first time.

Yeast DNA sequences initiating gene expression in Escherichia coli.

DNA transfer between pro- and eukaryotes occurs either during natural horizontal gene transfer or as a result of the employment of gene technology. We analysed the capacity of DNA sequences from a eukaryotic donor organism (Saccharomyces cerevisiae) to serve as promoter region in a prokaryotic recipient (Escherichia coli) by creating fusions between promoterless luxAB genes from Vibrio harveyi and random DNA sequences from S. cerevisiae and measuring the luminescence of transformed E.