5341-58-2Relevant articles and documents
A new acylhydrazine N'-(1,3 dimethylbutylene)-3-hydroxy-naphthohydrazide based fluorescent sensor for the detection of Ni2+
Duan, Abing,Li, Junhua,Liu, Mengqin,Luo, Chunhua,Peng, Hui,Tan, Yuxing,Yin, Zipeng
, (2020)
In this paper, a novel hydrazide compound (N'-(1,3 dimethylbutylene)-3-hydroxy-naphthohydrazide) (BMH) was synthesized by a simple three-stage reaction and its chemical structure was confirmed by 1H NMR, 13C NMR and FTIR characterization. This compound was used as fluorescent sensor for the detection of Ni2+ based on photoluminescence quenching. The fluorescence quenching of BMH upon the addition of Ni2+ is due to the formation of coordination complex which was verified by bind model and density functional theory studies. The Ni2+ concentration dependent fluorescence quenching efficiency of BMH was examined and the detection conditions were optimized. There is a good linear relationship between the emission intensity quenching (ΔF = F0–F) and the Ni2+ concentration (c) between 80 nM and 2 μM and the detection limit is 60 nM. The simple preparation of the compound BMH and the high sensitivity of the fluorescent sensor hold great promise for the determination of Ni2+ in environment.
A simple chemosensor for the dual-channel detection of cyanide in water with high selectivity and sensitivity
Cheng, Xiao-Bin,Li, Hui,Zheng, Feng,Lin, Qi,Yao, Hong,Zhang, You-Ming,Wei, Tai-Bao
, p. 27130 - 27135 (2016)
We have synthesized a simple chemosensor (HY) of acylhydrazones and used it for colorimetric detection of cyanide anions (CN-) in DMSO/H2O (3:7, v/v) mixed solvent. The simple chemosensor displays a specificity response for cyanide over other common anions (F-, Cl-, Br-, I-, AcO-, H2PO4-, HSO4-, ClO4-, and SCN-) in mixed solution. Upon treatment with cyanide, HY displayed a remarkable naked-eye and fluorogenic response, simultaneously with significant changes in its UV-visible and fluorescence spectra. Furthermore, competitive anions did not show any significant changes both in colour and emission intensity, indicating the high selectivity of the sensor to CN-. The absorption spectra detection limit of the chemosensor for cyanide was 8.34 × 10-7 M and the fluorescence spectra detection limit was 2.85 × 10-8 M. The cyanide test strips based on the chemosensor could serve as a convenient cyanide test kit. Furthermore, the chemosensor was successfully applied to the detection of cyanide in sprouting potatoes.
Discovery of an Orally Efficacious MYC Inhibitor for Liver Cancer Using a GNMT-Based High-Throughput Screening System and Structure-Activity Relationship Analysis
Kant, Rajni,Yang, Ming-Hui,Tseng, Chih-Hua,Yen, Chia-Hung,Li, Wei-You,Tyan, Yu-Chang,Chen, Marcelo,Tzeng, Cherng-Chyi,Chen, Wei-Cheng,You, Kaiting,Wang, Wen-Chieh,Chen, Yeh-Long,Chen, Yi-Ming Arthur
, p. 8992 - 9009 (2021/07/19)
Glycine-N-methyl transferase (GNMT) downregulation results in spontaneous hepatocellular carcinoma (HCC). Overexpression of GNMT inhibits the proliferation of liver cancer cell lines and prevents carcinogen-induced HCC, suggesting that GNMT induction is a potential approach for anti-HCC therapy. Herein, we used Huh7 GNMT promoter-driven screening to identify a GNMT inducer. Compound K78 was identified and validated for its induction of GNMT and inhibition of Huh7 cell growth. Subsequently, we employed structure-activity relationship analysis and found a potent GNMT inducer, K117. K117 inhibited Huh7 cell growth in vitro and xenograft in vivo. Oral administration of a dosage of K117 at 10 mpk (milligrams per kilogram) can inhibit Huh7 xenograft in a manner equivalent to the effect of sorafenib at a dosage of 25 mpk. A mechanistic study revealed that K117 is an MYC inhibitor. Ectopic expression of MYC using CMV promoter blocked K117-mediated MYC inhibition and GNMT induction. Overall, K117 is a potential lead compound for HCC- and MYC-dependent cancers.
A highly selective colorimetric and fluorescent probe for quantitative detection of Cu2+/Co2+: The unique ON-OFF-ON fluorimetric detection strategy and applications in living cells/zebrafish
Wang, Zhi-Gang,Wang, Yang,Ding, Xiao-Jing,Sun, Yu-Xuan,Liu, Hai-Bo,Xie, Cheng-Zhi,Qian, Jing,Li, Qing-Zhong,Xu, Jing-Yuan
, (2019/11/26)
Identifying and detecting similar target cations through combining “turn on” and “turn off” fluorescence mechanism is effective and challenging. Now a new colorimetric and ON-OFF-ON fluorescent probe N′-((7-(diethylamino)-2-oxo-2H-chromen-3-yl)methylene)-3-hydroxy-2-naphthohydrazide (L) was reported, which could detect Cu2+ and Co2+ in phosphate buffered CH3CH2OH-H2O solvent system. With the assistance of glutathione and pH adjustment, a unique ON-OFF-ON fluorescence detection strategy could be achieved for distinguishing Cu2+ and Co2+. The emission of probe could recover from the L-Cu2+ and L-Co2+ system by addition of GSH or adjusting pH value to 4, respectively, which is due to the abolishment of paramagnetic Cu2+/Co2+. Based on fluorescence titration experiments, the limit of detection was determined as 3.84 × 10?9 M and 4.55 × 10?9 M for Cu2+ and Co2+, respectively. Meanwhile, the detection limit reached 6.21 × 10?8 M for Cu2+ and 6.96 × 10?8 M for Co2+ according to absorbance signal output. Fast recognition of Cu2+/Co2+ can be achieved by obvious color changes from green to colorless under UV light, as well as from yellow to orange-red in room light. The binding mode of L toward Cu2+ and Co2+ have been systematically studied by Job's plot analysis, ESI-MS, IR and density functional theory calculations. Most strikingly, further practical applications of the probe L in fluorescence imaging were investigated in MCF-7 cells and zebrafish due to its low cytotoxicity and good optical properties, suggesting that L could serve as a fluorescent sensor for tracking Cu2+ and Co2+ in vivo.
