Objective: In the present study, screening for some flavonoids (aglycone and glycoside) in tamarix aphylla by using thin layer chromatography high-performance liquid chromat-ography. Methods: The leaves of
 
 Tamarix.aphylla was extracted soxhlet with Ethylacetate then ethanol /water 90%. were detected Analyticl standards HPLC. Results:Three flavonoid aglycones ethylacetate (Kaempfero...

Key words (–)-peyssonnoside A - diterpene glycoside marine natural product antimicrobial dearomative cyclization HAT-initiated Wittig reaction Mukaiyama hydration

background & aim: despite valuable medicinal properties of safflower, breeding new varieties and development of the crop culture area has been limited due to the lack of genetic variation for some crucial characteristics as resistance to diseases and pests like safflower fly. in this study, populations of wild safflower, c. oxyacanthus were collected from western, central and southern regio...

This paper presents a new assay to determine the activity of the lysosomal enzyme α-N-acetylgalactosaminidase (Naga, EC 3.2.1.49) in human serum. It is based on the use of a new chromogenic substrate, DNP-α-GalNAc (2,4-dinitrophenyl-N-acetyl-α-D-galactosaminide) and is performed at pH 4.3 and 37 °C. This allows continuous monitoring of the absorbance of the released DNP. The assay can be perfor...

About 12,000 chemical compounds isolated from medicinal plants and used to conduct crucial biological functions. These phytochemicals offer long-term health benefits for humans, thus they can be effectively treat a variety of human ailments. The goal this study was assess the in vitro free radical scavenging antibacterial activities glycoside, flavonoid alkaloid extracts Tilia cordata plant. Ac...

A small set of nojirimycin- and pyrrolidine-based iminosugar derivatives has been synthesized and evaluated as potential inhibitors of porcine and insect trehalases. Compounds 12, 13 and 20 proved to be active against both insect and porcine trehalases with selectivity towards the insect glycosidase, while compounds 10, 14 and 16 behaved as inhibitors only of insect trehalase. Despite the fact ...