1016-19-9Relevant academic research and scientific papers
Sulfonamide and urea-based anions chemosensors
Hu, Fang,Cao, Meijiao,Huang, Juanyun,Chen, Zhao,Wu, Di,Xu, Zhiqiang,Liu, Sheng Hua,Yin, Jun
, p. 108 - 115 (2015)
The detection of anions has attracted considerable interest because of their importance in various physiological processes. In this study, two sulfonamide and urea-based compounds (1a and 1b) were successfully developed and their spectroscopic and anion recognition properties were fully investigated. These results showed that: (1) compounds showed high selectivity towards cyanide and fluoride ions in CH3CN; (2) compounds only exhibited a large change in fluorescence in the presence of cyanide ions in CH3CN-H2O (95:5, v/v); and (3) compound 1b could act as a gel in dimethyl sulfoxide that transforms into a homogeneous solution upon exposure to cyanide ions. This research suggests that sulfonamide and urea can act as hydrogen-bond donors and provides an alternative approach to the design of novel anion chemosensors.
Isoquinuclidine-based expectorants. Synthesis and biological activities of N-alkoxybenzylisoquinuclidines
Yokota,Takizawa,Ohkura,Fukai,Tomiyama
, p. 377 - 384 (1997)
N-Di-, trialkoxybenzylisoquinuclidines and related compounds were synthesized and evaluated for expectorant activities. Structure-activity relationship investigations in this series showed that both the trialkoxyphenyl ring and the basic nitrogen atom at the benzylic position were necessary for activity. N-Trialkoxybenzylisoquinuclidines 7a, 7c, 7d, 7f and 7g significantly increased bronchial secretion, and ethoxy derivative 7c showed the highest activity in these compounds. The n-propyloxy derivatives 7d and 7f also accelerated bronchoalveolar surfactant secretion with about two to four times more activity than ambroxol (7d and 7f; ED50 = 27.5 and 15.5 mg/kg po, respectively); however, compounds 7a, 7c and 7g were less active than ambroxol. Compounds 7d and 7f were selected for further examination. These compounds displayed antioxidant activity in vitro (7d and 7f; IC50 = 48.0 and 66.0 μM, respectively). Compound 7d also showed inhibition on bradykinin- or antigen-induced airway inflammation in guinea pigs. These findings suggest that compounds 7d and 7f are potent expectorants with antiinflammatory activity.
Novel 5-fluorouracil sensitizers for colorectal cancer therapy: Design and synthesis of S1P receptor 2 (S1PR2) antagonists
Luo, Dongdong,Guo, Zhikun,Zhao, Xuecui,Wu, Lijuan,Liu, Xiaochun,Zhang, Yingzhi,Zhang, Yuhang,Deng, Zirong,Qu, Xianjun,Cui, Shuxiang,Wan, Shengbiao
, (2021/10/25)
Sphingosine-1-phosphate receptor 2 (S1PR2) has been identified as a brand-new GPCR target for designing antagonists to reverse 5-FU resistance. We herein report the structural optimization and structure-activity relationship of JTE-013 derivatives as S1PR2 antagonists. Compound 9d was the most potent S1PR2 antagonist (KD = 34.8 nM) among developed compounds. Here, compound 9d could significantly inhibit the expression of dihydropyrimidine dehydrogenase (DPD) to reverse 5-FU-resistance in HCT116DPD and SW620/5-FU cells. Further mechanism studies demonstrated that compound 9d not only inhibited S1PR2 but also affected the transcription of S1PR2. In addition, compound 9d also showed acceptable selectivity to normal cells (NCM460). Importantly, compound 9d with suitable pharmacokinetic properties could significantly reverse 5-FU-resistance in the HCT116DPD and SW620/5-FU xenograft models without obvious toxicity, in which the inhibition rates of 5-FU were increased from 23.97% to 65.29% and 27.23% to 60.81%, respectively. Further immunohistochemistry and western blotting analysis also demonstrated that compound 9d significantly decreases the expression of DPD in tumor and liver tissues. These results indicated that compound 9d is a promising lead compound to reverse 5-FU-resistance for colorectal cancer therapy.
Copper-catalyzed N[sbnd]H/S[sbnd]H functionalization: A strategy for the synthesis of benzothiadiazine derivatives
Do?an, ?engül Dilem
, p. 2217 - 2224 (2017/03/24)
A copper-mediated N[sbnd]S bond-forming reaction via N[sbnd]H/S[sbnd]H activation is described. This reaction occurs under mild conditions with high efficiency, step economy, and tolerates a wide variety of functional groups, providing an efficient means of accessing biologically important 1,2,4-benzothiadiazin-3(4H)-ones.
With anti-tumor effect of a quinazoline-urea derivative and its application (by machine translation)
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Paragraph 0139-0142; 0158, (2016/11/02)
The present invention relates to a of the general formula (II) anti-tumor function of said quinazoline-urea derivative and its application. The definition of the substituent in the general formula (II) in the specification. This invention, in order to SUO draw non-Buddhist nun and Geftinat compounds as the precursor, retention of SUO draw non-Buddhist nun the pharmocology-carbamido; at the same time, such as in reserved [...] EGFR-TKIs Geftinat, synthesis, and obtain a series of quinazoline-urea derivatives, by the in vitro activity tests, some compounds exhibit excellent anti-tumor activity, such derivatives have high research and utility value. (II). (by machine translation)
Synthesis and solid-state polymerization of butadiyne derivatives with Trialkoxyphenylurethane groups
Takahashi, Rintaro,Nunokawa, Tatsuya,Shibuya, Tadahiro,Tomita, Ryohei,Tatewaki, Yoko,Okada, Shuji,Kimura, Tatsumi,Shimada, Satoru,Matsuda, Hiro
, p. 236 - 244 (2012/04/23)
3,4,5-Trialkoxyphenyl isocyanate derivatives, in which alkoxy was dodecyloxy or methoxy, reacted with 4,6- decadiyn-1,10-diol and 5,7-dodecadiyn-1,12-diol, and four butadiyne derivatives with (N-trialkoxyphenyl)urethane groups were successfully synthesized. Their solid-state polymerization stimulated by UV or £-ray irradiation was investigated. All monomers in crystals were found to be polymerizable. However, conversion was different depending on the compounds. The derivatives from 5,7-dodecadiyn-1,12-diol showed better conversion, suggesting that they have more favorable monomer arrangement for the solid-state polymerization. Polymers of dodecyloxy derivatives could be partially dissolved in chloroform and they showed solvatochromism when hexane was added to the solution. As was expected from the structure of tridodecyloxyphenyl groups introduced, dodecyloxy derivatives gave organogels in various organic solvents in the concentration less than 2wt%. However, these gels could not be polymerized by UV irradiation, and the monomer alignment was found to be different between crystalline and gel states.
1-Aryl-3-(1-acylpiperidin-4-yl)urea inhibitors of human and murine soluble epoxide hydrolase: Structure-activity relationships, pharmacokinetics, and reduction of inflammatory pain
Rose, Tristan E.,Morisseau, Christophe,Liu, Jun-Yan,Inceoglu, Bora,Jones, Paul D.,Sanborn, James R.,Hammock, Bruce D.
supporting information; experimental part, p. 7067 - 7075 (2010/12/25)
1,3-Disubstituted ureas possessing a piperidyl moiety have been synthesized to investigate their structure-activity relationships as inhibitors of the human and murine soluble epoxide hydrolase (sEH). Oral administration of 13 1-aryl-3-(1-acylpiperidin-4-yl)urea inhibitors in mice revealed substantial improvements in pharmacokinetic parameters over previously reported 1-adamantylurea based inhibitors. For example, 1-(1-(cyclopropanecarbonyl) piperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea (52) showed a 7-fold increase in potency, a 65-fold increase in Cmax, and a 3300-fold increase in AUC over its adamantane analogue 1-(1-adamantyl)-3-(1-propionylpiperidin-4-yl) urea (2). This novel sEH inhibitor showed a 1000-fold increase in potency when compared to morphine by reducing hyperalgesia as measured by mechanical withdrawal threshold using the in vivo carrageenan induced inflammatory pain model.
Synthesis and evaluation of structurally constrained imidazolidin derivatives as potent dipeptidyl peptidase IV inhibitors
Wang, Liutang,Zhang, Bin,Ji, Jianxin,Li, Bogang,Yan, Jufang,Zhang, Weiyu,Wu, Yong,Wang, Xuechao
experimental part, p. 3318 - 3322 (2009/12/01)
To find potent and selective inhibitors of dipeptidyl peptidase IV (DPP-IV), we synthesized a series of 2-cyanopyrrolidine derivatives with constrained imidazolidin ring and tested their activities against DPP-IV. Most of them exhibited submicromolar inhibitory activities against DPP-IV. The most potent compound among these is (S)-1-(2-(2-(3-(3,4-dimethoxyphenyl)-2-oxoimidazolidin-1-yl)ethyl-amino)acetyl)pyrrolidine-2-carbonitrile (6n), which is a 2 nM DPP-IV inhibitor.
4′-Alkoxyl substitution enhancing the anti-mitotic effect of 5-(3′,4′,5′-substituted)anilino-4-hydroxy-8-nitroquinazolines as a novel class of anti-microtubule agents
Jin, Yi,Zhou, Zu-Yu,Tian, Wei,Yu, Qiang,Long, Ya-Qiu
, p. 5864 - 5869 (2007/10/03)
Mitosis inhibitors are powerful anticancer drugs. Based on a novel anti-microtubule agent of 5-(4′-methoxy)anilino-4-hydroxy-8-nitroquinazoline, a series of 5-(3′,4′,5′-substituted)anilino-4-hydroxy-8- nitroquinazolines were designed and synthesized to investigate the effect of the substitution on the inhibitory activity against mitotic progression of tumor cells. The large alkoxyl substitution on the 4′-position of 5-anilino ring is beneficial for the potency. The 5-(3′,4′,5′-trimethoxy)anilino-8-nitroquinazoline (1h) displays an overwhelming activity in arresting the cells at the G2/M phase, providing a promising new template for further development of potent microtubule-targeted anti-mitotic drugs.
Synthetic gallic acid derivatives as models for a comprehensive study of antioxidant activity
Belin, Florence,Barthelemy, Philippe,Ruiz, Karine,Lacombe, Jean Michel,Pucci, Bernard
, p. 247 - 265 (2007/10/03)
The synthesis and antioxidant efficiencies of amphiphilic gallic acid derivatives are reported. To specify the impact of chemical structure on the antioxidant efficiency, several structural modifications of gallic acid were performed. The following structural features were chosen: i) introduction of hydrophobic or hydrophilic residues on the gallic acid and the type of their linkage, ii) the hydrophilic and/or lipophilic character of the whole molecule. The physico-chemical studies of the different series prepared revealed that the antioxidant efficiency of this polyphenol depends clearly on the nature of the linkage with both hydrophilic and hydrophobic parts. A push-pull effect is always necessary, and ester or amide bonds seem well adapted to increase the antioxidant efficiency. Second, under the oxidation conditions applied, it was observed that the hydrophilic and/ or lipophilic character affects drastically the antioxidant activity of gallic acid derivatives. The results obtained are in accordance with the polar paradox, hydrophobic derivatives inhibit oxidation in an aqueous phase, whereas hydrophilic products are not efficient.
