2150-45-0Relevant articles and documents
Anti-inflammatory glycosides from the roots of Paeonia intermedia C. A. Meyer
Yu, Liang,Zhu, Ling-Juan,Wang, An-Hua,Qin, Yu,Zhang, Xue,Jia, Jing-Ming,Yao, Xin-Sheng
, p. 1452 - 1458 (2021)
Three new phenolic glycosides, intermedia A–C (1–3), one new acyclic alcohol glycoside, intermedia D (4), together with 3 known glycosides (5–7), were isolated from the dried roots of Paeonia intermedia C. A. Meyer. Their structures were established by means of extensive spectroscopic analysis (HRESIMS, NMR). Compound 1 have a rare benzo[1,5]dioxepine skeleton. The bioassay results showed that compound 3 exhibited inhibitory activity against proinflammatory cytokines nitric oxide (NO) secretion in LPS-activated RAW264.7 cells with an IC50 value of 85.76 ± 1.36 μM.
Convergent Protein Phosphatase Inhibitor Design for PTP1B and TCPTP: Exchangeable Vanadium Coordination Complexes on Graphene Quantum Dots
Crans, Debbie C.,Dong, Yaqiong,Feng, Bo,Shang, Bing,Yang, Xiaoda,Zhang, Bowen
, (2021/11/03)
Development of potent and specific inhibitors of protein tyrosine phosphatase 1B (PTP1B) with desired drug-like properties is still a challenge. Based on the crystal structures of PTP1B transition state analog consisting of a vanadate peptide, a novel approach is proposed to design PTP1B inhibitors, in which the tyrosyl vanadate ester of a PTP1B peptide mimic (PL1) is stably integrated on the membrane permeable graphene quantum dots (GQDs). The vanadate complexes (GQD-PL1-VV) prepared exhibit high potency (Ki?= 6?± 1?× 10?9 m) and selectivity (selectivity index SI >200?for PTP1B versus the T-cell protein tyrosine phosphatase, TCPTP) in solution and in HepG2 cells. Oral administration of GQD-PL1-VV in db/db model mice shows selective PTP1B inhibition in liver and fat tissues and exhibits improved anti-diabetic activity compared to bis(maltolato)oxovanadium(IV). Moreover, exchange of PL1 to a TCPTP-specific ligand (PL2) results in potent TCPTP inhibition (Ki?= 59?± 12?× 10?9 m) as expected with SI ≈23 versus PTP1B. Overall, the present results provide a paradigm shift and a general design of phosphatase inhibitors consisting of GQDs, a complexing targeting ligand and vanadium (V) for selective regulation of PTP1B both in vitro and vivo.
Pyrimidine salicylic acid derivative as well as preparation method and application thereof
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Paragraph 0020; 0029, (2018/10/19)
The invention provides a pyrimidine salicylic acid derivative as well as a preparation method and application thereof. The chemical structural formula of the pyrimidine salicylic acid derivative is represented by a formula (I) (shown in the description). The preparation method comprises the step of reacting by virtue of acid of bispyribac-sodium and trifluoroethanol or 4-butenol in an organic solvent in the presence of triethylamine and 1-hydroxybenzotriazole, so as to obtain the compound of the formula (I). The preparation method is simple in operation and relatively high in yield, the prepared pyrimidine salicylic acid derivative is low in dose and high in activity, has herbicidal activities to agricultural weeds such as dicotyledon weeds and monocotyledon weeds at 15g/hm, particularly has relatively prevention effects to the after-treatment of seedlings of goosefoots and crab grass and can be taken as a candidate compound of herbicides, a new choice is provided for the new species of the herbicides, and the pyrimidine salicylic acid derivative has potential industrial application prospects.