Synthesis and Antimicrobial Activity of Some Novel Substituted 3-(Thiophen-2-yl)pyrazole-based Heterocycles
作者:Bakr F. Abdel-Wahab、Abdelbasset A. Farahat、Ghada E. A. Awad、Gamal A. El-Hiti
DOI:10.2174/1570180814666170327162447
日期:2017.10.3
Background: A series of novel substituted 3-(thiophen-2-yl)pyrazoles was synthesized efficiently and in high yields using simple and convenient procedures starting from 1-phenyl-3- (thiophen-2-yl)-1H-pyrazole-4-carbaldehyde. Methods: The structures of the newly synthesized products were established and their antimicrobialactivities were investigated against some bacteria and fungi. Results and Conclusion:
Synthesis and anticancer activity of new coumarin-3-carboxylic acid derivatives as potential lactate transport inhibitors
作者:Hong Ji、Yaling Tan、Nana Gan、Jing Zhang、Shannuo Li、Xuan Zheng、Zhaohua Wang、Wei Yi
DOI:10.1016/j.bmc.2020.115870
日期:2021.1
escape and other tumor biological functions. Pharmacological inhibition of lactate transport has been viewed as a promising therapeutic strategy to target a range of human cancers. In this study, a series of new coumarin-3-carboxylic acid derivatives 5a-t and 9a-b were synthesized and evaluated as lactate transport inhibitors. Their cytotoxic activity has been tested against three cell lines high-expressing
Pyrolysis of aminonitriles, cyanohydrazones, and cyanoacetamides. Part II. Elimination reactions of arylacetylhydrazone, arylcyanoacetylhydrazone, and substituted cyanoacetamides
作者:Nouria A. Al-Awadi、Mohamed H. Elnagdi、Tommy Mathew、Mervat Abdel Khalik
Rates of pyrolytic reactions of arylacetylhydrazone and arylcyanoacetylhydrazone (1-4) of the general formula GCH(2)CONHN=CHAr (G = H,CN) have been measured. The increase in the acidity of the hydrogen atom involved in the six-centered elimination process suggested for these reactions causes a significant increase in rates and thus appears to be the limiting factor in these pyrolytic reactions. The implication of this conclusion for the pyrolytic reactions of substituted cyanoacetamides (5-8), NCCH2CONHAr are considered, The mechanism of pyrolytic reactions of compounds (5-8) appears to proceed through a 4-membered cyclic transition state. (C) 1996 John Wiley & Sons, Inc.
El-Taweel; Elagamey; Elmougy, Sh.M., Egyptian Journal of Chemistry, 2011, vol. 54, # 6, p. 703 - 721
作者:El-Taweel、Elagamey、Elmougy, Sh.M.
DOI:——
日期:——
An Efficient Synthesis of Some New Coumarin Hybrids Endowed with Expected Biological Activity
作者:Mohamed A. Raslan、Noura Sh. Hagaggi、Kamal M. Dawood、Hany A. Abdel Atty、Ayman Nafady