7659-02-1Relevant articles and documents
Synthesis, telomerase inhibitory and anticancer activity of new 2-phenyl-4H-chromone derivatives containing 1,3,4-oxadiazole moiety
Han, Xu,Liu, Xin Hua,Ma, Duo,Yu, Yun Long,Zhang, Zhao Yan
, p. 344 - 360 (2021/01/06)
Based on previous studies, 66 2-phenyl-4H-chromone derivatives containing amide and 1,3,4-oxadiazole moieties were prepared as potential telomerase inhibitors. The results showed most of the title compounds exhibited significantly inhibitory activity on telomerase. Among them, some compounds demonstrated the most potent telomerase inhibitory activity (IC50 50 = 6.41 μM). In addition, clear structure–activity relationships were summarised, indicating that the substitution of the methoxy group and the position, type and number of the substituents on the phenyl ring had significant effects on telomerase activity. Among them, compound A33 showed considerable inhibition against telomerase. Flow cytometric analysis showed that compound A33 could arrest MGC-803 cell cycle at G2/M phase and induce apoptosis in a concentration-dependent way. Meanwhile, Western blotting revealed that this compound could reduce the expression of dyskerin, which is a fragment of telomerase.
Synthesis, in vitro α-glucosidase inhibitory potential and molecular docking studies of 2-amino-1,3,4-oxadiazole derivatives
Ullah, Hayat,Rahim, Fazal,Taha, Muhammad,Hussain, Raffaqat,Wadood, Abdul,Nawaz, Mohsan,Wahab, Zainul,Kanwal,Khan, Khalid M.
, p. 724 - 734 (2020/08/19)
Background: In the recent past, we have synthesized and reported different derivatives of oxadiazoles as potential α-glucosidase inhibitors, keeping in mind, the pharmacological aspects of oxadiazole moiety and in continuation of our ongoing research on the chemistry and bioactivity of new heterocyclic compounds. Methods: 1,3,4-Oxadiazole derivatives (1-14) have been synthesized and characterized by different spectroscopic techniques such as1 H-,13 C-NMR and HREI-MS. Results: The synthetic derivatives were screened for α-glucosidase inhibitory potential. All compounds exhibited good inhibitory activity with IC50 values ranging between 0.80 ± 0.1 to 45.1 ± 1.7 μM in comparison with the standard acarbose having IC50 value 38.45 ± 0.80 μM. Conclusion: Thirteen compounds 1-6 and 8-14 showed potential inhibitory activity as compared to the standard acarbose having IC50 value 38.45 ± 0.80 μM, however, only one compound 7 (IC50 = 45.1 ± 1.7 μM) was found to be less active. Compound 14 (IC50 = 0.80 ± 0.1 μM) showed promising inhibitory activity among all synthetic derivatives. Molecular docking studies were also conducted for the active compounds to understand the ligand-enzyme binding interactions.
A 2-amino-5-substituted -1, 3, 4-oxadiazoles and its preparation method and application
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Paragraph 0042-0044, (2017/01/12)
The invention relates to 2-amido-5-substituted-1,3,4-oxadiazole as well as a preparation method and application thereof. The preparation method comprises the following steps: adding semicarbazone, manganese dioxide and pyridine into a reaction vessel, rea
Photocatalytic oxidative heterocyclization of semicarbazones: An efficient approach for the synthesis of 1,3,4-oxadiazoles
Kapoorr, Ritu,Singh, Sachchida N.,Tripathi, Shubhangi,Yadav, Lal Dhar S.
supporting information, p. 1201 - 1206 (2015/06/02)
Abstract A highly efficient eosin Y catalyzed oxidative heterocyclization of semicarbazones was established under visible-light photoredox catalysis using CBr4 as a bromine source. The protocol renders a rapid, mild, and efficient access to val
Synthesis of 2-amino-1,3,4-oxadiazoles and 2-Amino-1,3,4-thiadiazoles via sequential condensation and I2-mediated oxidative C-O/C-S bond formation
Niu, Pengfei,Kang, Jinfeng,Tian, Xianhai,Song, Lina,Liu, Hongxu,Wu, Jie,Yu, Wenquan,Chang, Junbiao
, p. 1018 - 1024 (2015/01/30)
2-Amino-substituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles were synthesized via condensation of semicarbazide/thiosemicarbazide and the corresponding aldehydes followed by I2-mediated oxidative C-O/C-S bond formation. This transition-metal-free sequential synthesis process is compatible with aromatic, aliphatic, and cinnamic aldehydes, providing facile access to a variety of diazole derivatives bearing a 2-amino substituent in an efficient and scalable fashion.
A Highly Efficient Diversification of 2-Amino/Amido-1,3,4-oxadiazole and 1,3,4-Thiadiazole Derivatives via Reagent-Based Cyclization of Thiosemicarbazide Intermediate on Solid-Phase
Yang, Seung-Ju,Choe, Ji-Hye,Abdildinova, Aizhan,Gong, Young-Dae
, p. 732 - 741 (2015/12/23)
A 2-amino/amido-1,3,4-oxadiazole and 1,3,4-thiadiazole library has been constructed on solid-phase organic synthesis. The key step on this solid-phase synthesis involves the preparation of polymer-bound 2-amino-1,3,4-oxadiazole and 1,3,4-thiadiazole core
A Facile microwave assisted synthesis and spectral analysis of 2-amino-5-substituted phenyl-1,3,4-oxadiazoles
Kumar, Sanjeev,Yadav, Sneha,Jadon, Sudha,Kumar, Vipin,Khedr, Abdalla M.,Gupta, Kishan C.
, p. 1845 - 1848 (2013/06/27)
An efficient synthesis for the preparation of some 2-amino-5-substituted phenyl-1,3,4-oxadiazoles by using both conventional and microwave method have been devised. The obtained results revealed that, microwave assisted technique is efficient, eco-friendl
Microwave assisted synthesis and spectral analysis of schiff bases derived from 2-amino-5-aryl-1,3,4-oxadiazoles
Kumar, Sanjeev,Yadav, Sneha,Jadon, Sudha,Kumar, Vipin,Khedr, Abdalla M.,Gupta, Kishan C.
, p. 1833 - 1836 (2013/07/05)
Microwave assisted synthesis of new Schiff bases derived from 2-amino-5-substituted aryl-1,3,4-oxadiazoles with substituted aromatic aldehyde have been carried out. The chemical structures of the prepared Schiff bases have been investigated by analytical
Synthesis, antibacterial evaluation and QSAR studies of 7-[4-(5-aryl-1,3,4-oxadiazole-2-yl)piperazinyl] quinolone derivatives
Kumar, Rajnish,Kumar, Ashwani,Jain, Sandip,Kaushik, Darpan
experimental part, p. 3543 - 3550 (2011/10/19)
A series of 7-[4-(5-aryl-1,3,4-oxadiazole-2-yl)piperazinyl] quinolones (I-XXI) were synthesized using an appropriate synthetic route and characterized by elemental and spectral analysis. The antibacterial activities of all the synthesized compounds were e
Facile method for the conversion of semicarbazones/thiosemicarbazones into azines (Under Microwave Irradiation) and oxadiazoles (By Grinding)
Chattopadhyay, Gautam,Ray, Partha Sinha
experimental part, p. 2607 - 2614 (2011/08/07)
In an effective transformation, semicarbazones/thiosemicarbazones are smoothly converted into azines under microwave irradition. Oxadiazoles are also obtained from semicarbazones by reaction with bromine generated in situ via a grinding reaction in the solid phase. Taylor &Francis Group, LLC.