929076-64-2

Upstream product

• 915-79-7 (3β)-3-acetoxy-urs-12-en-28-carboxylic acid 
• 62-53-3 aniline 
• 77-52-1 ursolic acid 
• 54717-94-1 3β-acetoxy-urs-12-ene-28-oyl chloride 

Relevant academic research and scientific papers

Side chain-functionalized aniline-derived ursolic acid derivatives as multidrug resistance reversers that block the nuclear factor-kappa B (NF-κB) pathway and cell proliferation

A series of inhibitors of NF-κB based on ursolic acid (UA) derivatives containing functionalized aniline or amide side chains were synthesized and evaluated for inhibition of NF-κB as well as their antitumor effects. These compounds exhibited significant inhibition activity toward NF-κB with IC50 values at micromolar concentrations in the NCI-H460 lung adenocarcinoma cell line. A docking study of the most active compound 5Y8 revealed key interactions between 5Y8 and the active site of NF-κB in which the functionalized amide moiety at the C-28 position and an ester group at the C-3 position were important for improving the activity. In particular, compound 5Y8 appeared to be the most potent compound against the NCI-H460 cell line, and displayed similar efficiency in drug-sensitive versus drug-resistant cancer cell lines, at least partly, by blocking the NF-κB signaling pathway and inducing apoptosis. Mechanistically, compound 5Y8 might trigger the apoptotic signaling pathway. Thus, the rational design of UA derivatives with functionalized aniline or amide side chains offers significant potential for the discovery of a new class of NF-κB inhibitors with the ability to induce apoptosis and reverse multidrug resistance in the NCI-H460 lung adenocarcinoma cell line.

Polishing wusu acidifies ornament and its preparation method and application

The invention discloses chemically modified ursolic acid and its preparation method and use. The chemically modified ursolic acid has a structural formula shown in the following formula, and in the formula, R1 represents acyloxy and R2 represents an amino group. The preparation method comprises the following steps that ursolic acid and acid anhydride undergo a reaction under the catalyst condition to produce 3 beta-acyloxy-ursane-12-ene-28-carboxylic acid compounds 2-5, the compounds 2-5 are acylated by oxalyl chloride under the ice bath condition to form 3-acetoxy-ursane-12-ene-28-acyl chloride, and the 3-acetoxy-ursane-12-ene-28-acyl chloride and aniline undergo a reaction under the acid binding agent condition to produce N-(3 beta-acyloxy-ursane-12-ene-28-acyl)-amine compound. The N-(3 beta-acyloxy-ursane-12-ene-28-acyl)-amine compound has enzymatic activity inhibition effects, can be used in drugs, drinks, foods and health products for preventing, controlling or treating high-blood sugar level diabetes or obesity and belongs to the technical field of drug synthesis.

In vitro and in vivo evaluation of the antidiabetic activity of ursolic acid derivatives

In this study, a series of ursolic acid derivatives were synthesized, and their structures were confirmed. The activity of the synthesized compounds against α-glucosidase was determined in vitro. The results suggested that all compounds have significant inhibitory activity, especially compounds 3-5 and 8, the IC50 values of which were 2.66 ± 0.84, 1.01 ± 0.44, 3.26 ± 0.22, and 3.24 ± 0.21 μM. These compounds were more potent than acarbose (positive control) against α-glucosidase. Kinetic studies were performed to determine the mechanism of inhibition by compounds 3-5 and 8. The kinetic inhibition studies indicated that compound 3 was a non-competitive inhibitor, and the inhibition constant Ki was calculated to be 2.67 ± 0.19 μM. Moreover, the kinetic inhibition studies of compounds 4, 5 and 8 demonstrated that they were mixed-type inhibitors. Furthermore, the actual pharmacological potentials of synthesized compounds 3 and 4 were demonstrated by the reduction of postprandial blood glucose levels in normal Kunming mice. The hypoglycemic effects of these compounds were more evident 30 and 60 min after maltose ingestion (P 0.05), which was similar to the effect displayed by the positive control, acarbose.