Acylpyrazolone ligands: Synthesis, structures, metal coordination chemistry and applications

This review summarizes the literature on 4-acyl-5-pyrazolone ligands, their synthesis, characterization and coordination chemistry toward main group, transition, lanthanide and actinide metals and relevant applications of their metal complexes.     

Heptyl vicianoside and methyl caramboside from sour star fruit

Two new alkyl glycosides, heptyl vicianoside (1) and methyl 2-O-β-d-fucopyranosyl-α-l-arabinofuranoside (methyl caramboside, 4), were isolated from the sour fruit of Averrhoa carambola L. (Oxalidaceae), along with octyl vicianoside (2), cis-3-hexenyl rutinoside (3), and methyl α-d-fructofuranoside (5). Their structures were determined by spectroscopic and chemical methods. Compounds 2, 3, and 5 were obtained from the genus Averrhoa for the first time. All the compounds were evaluated for in vitro α-glucosidase, pancreatic lipase, and acetylcholinesterase inhibitory activities, but none of them were potent.     

P350从硝酸介质中萃取Nd（Ⅲ）的动力学研究

本要用恒界面池法研究了诸因素对甲基膦酸二甲庚酯（Ｐ３５０）从硝酸体系中萃取Ｎｄ（Ⅲ）动力学的影响，求得反应的表观活化能为１１．８ｋＪ／ｍｏｌ，从实验结果推论出萃取过程为界面化学反应的控制机理，进出萃取反应速率方程，并提出中性磷氧萃取剂在萃取金属离子过程中可能存在阳离子交换反应机理。     

Hydrolysis of Dipeptide Heptyl Esters with Newlase F

Peptides conjugates, such as lipo-, glyco-, phospho- and nucleopeptides1, are of great importance in the research of signal transmission2, protein phosphorylation/ dephosphorylation, antibody, and so on. However, the synthesis of these compounds is severely complicated by their pronounced acid and base lability as well as their multifunctionality. Under basic or acidic conditions, (-elimination reactions, anomerization, hydrolysis or rupture of these compounds may occur. The traditional peptid…