851475-58-6

Usage

InChI:InChI=1/C32H51NO4/c1-27(2)14-16-32(26(37)33-19-25(35)36)17-15-30(6)20(21(32)18-27)8-9-23-29(5)12-11-24(34)28(3,4)22(29)10-13-31(23,30)7/h8,21-24,34H,9-19H2,1-7H3,(H,33,37)(H,35,36)/t21-,22-,23+,24-,29-,30+,31+,32-/m0/s1

Upstream product

• 39701-64-9 acetic acid 3β-(olean-12-ene-28-chlorocarbonyl) ester 
• 1596377-01-3 1-benzotriazolyl 3β-hydroxyolean-12-en-28-oate 
• 97180-62-6 3β-acetoxyolean-12-en-28-oic acid ethoxycarbonylmethylamide 
• 4339-72-4 oleanolic acid 3-acetate 
• 508-02-1 Oleanolic acid 
• 247082-71-9 [((4aS,6aS,6bR,8aR,10S,12aR,12bR,14bS)-10-Acetoxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-octadecahydro-2H-picene-4a-carbonyl)-amino]-acetic acid methyl ester 

Relevant academic research and scientific papers

Simple amides of oleanolic acid as effective penetration enhancers

Transdermal transport is now becoming one of the most convenient and safe pathways for drug delivery. In some cases it is necessary to use skin penetration enhancers in order to allow for the transdermal transport of drugs that are otherwise insufficiently skin-permeable. A series of oleanolic acid amides as potential transdermal penetration enhancers was formed by multistep synthesis and the synthesis of all newly prepared compounds is presented. The synthetized amides of oleanolic acid were tested for their in vitro penetration promoter activity. The above activity was evaluated by means of using the Fürst method. The relationships between the chemical structure of the studied compounds and penetration activity are presented.

Synthesis, Structure Activity Relationship and Anti-influenza A Virus Evaluation of Oleanolic Acid-Linear Amino Derivatives

Oleanolic acid (OA) was discovered as a mild influenza hemagglutinin (HA) inhibitor in our earlier studies. In the present work, 20 compounds were prepared by structural modifications of OA, and their antiviral activities against influenza A/WSN/33 (H1N1) virus in Madin–Darby canine kidney (MDCK) cells were evaluated. Based on the biological result, structure–activity relationship (SAR) was discussed. Compound 10 with six-carbon chain and a terminal hydroxyl group showed the strongest anti-influenza activity with an IC50 of 2.98μM, which is an order of magnitude more potent than OA. Hemagglutination inhibition and Surface plasmon resonance (SPR) assay indicated that compound 10 might interfere with influenza invasion by interacting with HA protein.

A kind of triterpene with straight-chain amino derivative conjugate and its application (by machine translation)

The discloses the structural formula represented by the formula of the triterpene with straight-chain amino derivatives of the conjugates: The compound application in the preparation of the treatment or/or prevention of influenza in the medicament, the experimental results show that the triterpene with straight-chain amino derivative of the conjugate to the influenza virus has significant inhibition function, and can obviously inhibit the influenza virus enters the cell; in the present invention compounds in order to influenza virus into the cell stage as the target, from the source to inhibit the influenza virus infections, to anti-influenza virus inhibitor provides the basis for the study. (by machine translation)

Design, synthesis and biological evaluation of amino acids-oleanolic acid conjugates as influenza virus inhibitors

Viral entry inhibitors are of great importance in current efforts to develop a new generation of anti-influenza drugs. Inspired by the discovery of a series of pentacyclic triterpene derivatives as entry inhibitors targeting the HA protein of influenza vi

Triterpenoid Hydroxamates as HIF Prolyl Hydrolase Inhibitors

Pentacyclic triterpenoid acids (PCTTAs) are pleiotropic agents that target many macromolecular end-points with low to moderate affinity. To explore the biological space associated with PCTTAs, we have investigated the carboxylate-to-hydroxamate transformation, discovering that it de-emphasizes affinity for the transcription factors targeted by the natural compounds (NF-κB, STAT3, Nrf2, TGR5) and selectively induces inhibitory activity on HIF prolyl hydrolases (PHDs). Activity was reversible, isoform-selective, dependent on the hydroxamate location, and negligible when this group was replaced by other chelating elements or O-alkylated. The hydroxamate of betulinic acid (5b) was selected for further studies, and evaluation of its effect on HIF-1α expression under normal and hypoxic conditions qualified it as a promising lead structure for the discovery of new candidates in the realm of neuroprotection.

Oleanolic acid and its derivatives: New inhibitor of protein tyrosine phosphatase 1B with cellular activities

Protein tyrosine phosphatase 1B is a key factor in the negative regulation of insulin pathway and a promising target for treatment of diabetes and obesity. Herein, a series of competitive inhibitors were optimized from oleanolic acid, a natural triterpenoid identified against PTP1B by screening libraries of traditional Chinese medicinal herbs. Modifying at 3 and 28 positions, we obtained compound 13 with a Ki of 130 nM, which exhibited good selectivity between other phosphatases involved in insulin pathway except T-cell protein tyrosine phosphatase. Further evaluation in cell models illustrated that the derivatives enhanced insulin receptor phosphorylation in CHO/hIR cells and also stimulated glucose uptake in L6 myotubes with or addition of without insulin.

Synthesis and activity of oleanolic acid derivatives, a novel class of inhibitors of osteoclast formation

Two series of oleanolic acid derivatives were synthesized and their inhibitory activity on the formation of osteoclast-like multinucleated cells (OCLs) induced by 1α,25-dihydroxy vitamin D3 was evaluated in a co-culture assay system. The structure-activity relationships, together with electronic structure based on the frontier molecular orbitals, for example, HOMO and LUMO, related to different amino acid substituents were studied. Derivatives with proline or phenylalanine showed a tendency to enhance the inhibitory activity.

Synthesis and evaluation of potential complement inhibitory semisynthetic analogs of oleanolic acid

A number of semisynthetic analogs of oleanolic acid have been synthesized and tested for their complement inhibitory, cytotoxic and apoptotic activities. Among these, compounds 10 and 17 exhibited complement inhibitory potency superior to oleanolic acid. Both have also shown a moderate improvement in in vitro therapeutic index (T.I.).