18598-23-7Relevant academic research and scientific papers
Fluorescent DNA-poly(phenylenevinylene) hybrid hydrogels for monitoring drug release
Tang, Hongwei,Duan, Xinrui,Feng, Xuli,Liu, Libing,Wang, Shu,Li, Yuliang,Zhu, Daoben
, p. 641 - 643 (2009)
A new class of fluorescent DNA-poly(phenylenevinylene) hybrid hydrogels (DNA/SP-PPV) have been prepared by in situ polymerization of monomer with salmon DNA as template, which are used for monitoring drug release driven by media pH. The Royal Society of Chemistry 2009.
Recognition selectivities of lasso-type pseudo[1]rotaxane based on a mono-ester-functionalized pillar[5]arene
Zhang, Wen-Xue,Liu, Lu-Zhi,Duan, Wen-Gui,Zhou, Qing-Qing,Ma, Cui-Guang,Huang, Yan
, (2019)
Two types of mono-ester-functionalized pillar[5]arenes, P1 and P2, bearing different side-chain groups, were synthesized. Their host–guest complexation and self-inclusion properties were studied by 1H NMR and 2D nuclear overhauser effect spectr
A stable and porous iridium(III)-porphyrin metal-organic framework: Synthesis, structure and catalysis
Cui, Hao,Wang, Yingxia,Wang, Yanhu,Fan, Yan-Zhong,Zhang, Li,Su, Cheng-Yong
, p. 2203 - 2209 (2016)
Self-assembly of a new metalloporphyrin tetracarboxylic ligand Ir(TCPP)Cl (TCPP = tetrakis(4-carboxyphenyl)porphyrin) with ZrCl4 in the presence of benzoic acid leads to the formation of a three-dimensional (3D) iridium(III)-porphyrin metal-organic framework (Ir-PMOF) with the formula of [(Zr6(μ3-O)8(OH)2(H2O)10)2(Ir(TCPP)Cl)3]·solvents (Ir-PMOF-1(Zr)), which possesses square-shaped channels of 1.9 × 1.9 nm2 (atom-to-atom distances across opposite Ir metal atoms) in three orthogonal directions as disclosed by the single-crystal X-ray diffraction analysis. Ir-PMOF-1(Zr) represents the first MOF bearing a self-supporting iridium-porphyrin catalytic framework, featuring high porosity and stability. The catalytic tests disclose that the activated Ir-PMOF-1(Zr) can promote O-H insertion with a turnover frequency (TOF) up to 4260 h-1. Ir-PMOF-1(Zr) can be recycled and reused for 10 runs without significant loss of catalytic activity, and the total turnover number (TON) for O-H insertion after 10 successive runs reaches 875.
Copillar[5]arene-rhodamine conjugate as a selective sensor for Hg2+ ions
Roy, Saswati Ghosh,Mondal, Subhendu,Ghosh, Kumaresh
, p. 5921 - 5928 (2020)
A new copillar[5]arene coupled rhodamine probe 1 has been designed and synthesized. The molecular probe shows selective sensing of Hg2+ ions over a series of metal ions in CH3CN by exhibiting a color change of the solution as well as
Identification and synthesis of selective cholesterol esterase inhibitor using dynamic combinatorial chemistry
Zhao, Shuang,Wu, Yao,Hu, Lei
, (2021/12/04)
In this study, the concept of dynamic combinatorial chemistry (DCC) was applied to explore novel cholesterol esterase (CEase) inhibitors. In the presence of enzyme, two substrates (A1H3 and A2H3) were amplified from the dynamic combinatorial library (DCL), which was generated through reversible acylhydrazone formation reaction. In the in vitro biological evaluation, compound A1H3 exhibited not only potent (IC50 in nanomolar range) but also selective inhibition (>120 folds of selectivity for CEase over AChE). Furthermore, the binding pattern and possible binding mechanism were investigated in the kinetic experiment and molecular docking study, respectively.
A mechanically self-locked gemini-[1]rotaxane-assembled microsphere and its properties on l-Arg controlled reversible morphology and fluorescence changes
Dong, Hong-Qiang,Li, Ying-Jie,Lin, Qi,Sun, Xiao-Wen,Wang, Zhong-Hui,Wei, Tai-Bao,Yang, Qing-Yu,Yao, Hong,Zhang, You-Ming,Zhang, Yun-Fei
supporting information, p. 10347 - 10353 (2021/08/25)
Herein, a novel pillar[5]arene-based gemini-[1]rotaxane molecule DEP5 was successfully designed and synthesized. Interestingly, the gemini-[1]rotaxane DEP5 serving as a chemosensor could selectively recognize l-Arg with high sensitivity and its lowest detection limit (LOD) was 1.43 × 10-7 M. Simultaneously, the gemini-[1]rotaxane DEP5 could assemble into the microsphere structure and its microsphere morphology could transform into cross-linked supramolecular networks through host-guest interactions with l-Arg. Furthermore, its microsphere morphology could be recovered again by the addition of competitive reagent guest trifluoroacetic acid (TFA). Therefore, this work provides a new and simple approach to construct gemini-[1]rotaxane-based smart materials which could assemble into the microsphere in solution and achieve reversible regulation of morphology between the microsphere and cross-linked supramolecular networks by external chemical stimuli (l-Arg/TFA). This kind of material not only has a perspective in l-Arg sensors but also has potential for application in other fields such as drug control release.
Design, synthesis and molecular modelling of phenoxyacetohydrazide derivatives as Staphylococcus aureus MurD inhibitors
Jupudi, Srikanth,Azam, Mohammed Afzal,Wadhwani, Ashish
, p. 1221 - 1235 (2020/10/09)
In the present work we synthesized a new series of phenoxyacetohydrazide functional compounds 4a-k and characterized by spectral data. Synthesized compounds were screened in vitro for their antibacterial activity. Compounds 4a, 4j and 4k exhibited inhibitory activity against S. aureus NCIM 5022 with MIC value of 64?μg/ml These compounds also exhibited activity against methicillin resistant S. aureus ATCC 43300 with MIC of 128?μg/ml. Among all the tested compounds 4c and 4j showed highest activity, respectively against B. subtilis NCIM 2545 and K. pneumoniae NCIM 2706. Only one compound i.e. 4d showed activity against another Gram-negative bacteria P. aeruginosa NCIM 2036 with MIC value of 64?μg/ml. Among three tested compounds, 4k exhibited highest inhibitory activity against S. aureus MurD enzyme with IC50 value of 35.80?μM. Further binding interactions of 4a-k with the modelled S. aureus MurD catalytic pocket residues is investigated with the extra-precision molecular docking and binding free energy calculation by MM-GBSA approach. The van der Waals energy term was observed to be the driving force for binding. Further, 50?ns molecular dynamics simulations were performed to validate the stabilities of 4j- and 4k-modelled S. aureus MurD. Graphic abstract: [Figure not available: see fulltext.]
Design, synthesis and biological evaluation of oxime lacking Psammaplin inspired chemical libraries as anti-cancer agents
Ali, Kasim,Chaturvedi, Priyank,Datta, Dipak,Kumar M, Srinivas Lavanya,Meena, Sanjeev,Panda, Gautam
, (2020/10/02)
In this study, we attempted the chemical simplification of Psammaplin (PsA), while retaining its activity in vitro. Inspired by the previous Structure Activity Relationship (SAR) studies on various PsA analogues and relying on the fact that oxime is metabolically unstable, we initially designed and synthesized a diverse library of PsA analogues and evaluated for cytotoxic activity. Among 32 compounds of Psammaplin analogues synthesized, the compound 10b was almost equally active as parent Psammaplin in vitro.
Expedient discovery for novel antifungal leads: 1,3,4-Oxadiazole derivatives bearing a quinazolin-4(3H)-one fragment
Chai, Jianqi,Chen, Min,Jin, Fei,Kong, Xiangyi,Wang, Xiaobin,Xue, Wei,Yang, Chunlong
, (2021/08/03)
Developing novel fungicide candidates are intensively promoted by the rapid emergences of resistant fungi that outbreak on agricultural production. Aiming to discovery novel antifungal leads, a series of 1,3,4-oxadiazole derivatives bearing a quinazolin-4(3H)-one fragment were constructed for evaluating their inhibition effects against phytopathogenic fungi in vitro and in vivo. Systematically structural optimizations generated the bioactive molecule I32 that was identified as a promising inhibitor against Rhizoctonia solani with the in vivo preventative effect of 58.63% at 200 μg/mL. The observations that were captured by scanning electron microscopy and transmission electron microscopy demonstrated that the bioactive molecule I32 could induce the sprawling growth of hyphae, the local shrinkage and rupture on hyphal surfaces, the extreme swelling of vacuoles, the striking distortions on cell walls, and the reduction of mitochondria numbers. The above results provided an indispensable complement for the discovery of antifungal lead bearing a quinazolin-4(3H)-one and 1,3,4-oxadiazole fragment.
Design and synthesis of α-phenoxy-N-sulfonylphenyl acetamides as Trypanosoma brucei Leucyl-tRNA synthetase inhibitors
Xin, Weixiang,Li, Zezhong,Wang, Qing,Du, Jin,Zhu, Mingyan,Zhou, Huchen
, (2019/11/26)
Human African trypanosomiasis (HAT), caused by the parasitic protozoa Trypanosoma brucei, is one of the fatal diseases in tropical areas and current medicines are insufficient. Thus, development of new drugs for HAT is urgently needed. Leucyl-tRNA synthetase (LeuRS), a recently clinically validated antimicrobial target, is an attractive target for development of antitrypanosomal drugs. In this work, we report a series of α-phenoxy-N-sulfonylphenyl acetamides as T. brucei LeuRS inhibitors. The most potent compound 28g showed an IC50 of 0.70 μM which was 250-fold more potent than the starting hit compound 1. The structure-activity relationship was also discussed. These acetamides provided a new scaffold and lead compounds for the further development of clinically useful antitrypanosomal agents.
