Výsledky vyhledávání - "Xueguo Zhang"

Akademický článek

Efficient Solvent-Free Synthesis of Indolizines Using CuBr Catalyst from Pyridine, Acetophenone, and Electron-Deficient Alkenes

Autor: Xueguo Zhang, Jianpeng Zhang, Zhengyi Liu, Wenxuan Bi, Jian Shen, Guang Li

Publikováno v: Molecules, Vol 29, Iss 9, p 2061 (2024)

Herein, we have developed a new approach for the synthesis of indolizine via Cu-catalyzed reaction of pyridine, acetophenone, and nitroolefin under mild conditions in high yields. This reaction involved the formation of C–N and C–C bonds and new

Externí odkaz: https://doaj.org/article/d5d114144b3d4efc9f7a0a2c0b790822

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Akademický článek

Responses of Nucleus Tractus Solitarius (NTS) early and late neurons to blood pressure changes in anesthetized F344 rats.

Autor: Jenya Kolpakova, Liang Li, Jeffrey T Hatcher, He Gu, Xueguo Zhang, Jin Chen, Zixi Jack Cheng

Publikováno v: PLoS ONE, Vol 12, Iss 4, p e0169529 (2017)

Previously, many different types of NTS barosensitive neurons were identified. However, the time course of NTS barosensitive neuronal activity (NA) in response to arterial pressure (AP) changes, and the relationship of NA-AP changes, have not yet bee

Externí odkaz: https://doaj.org/article/551f0f93c66c4ba8a8bdb995bbcfdbf8

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Akademický článek

A Conditioned Behavioral Paradigm for Assessing Onset and Lasting Tinnitus in Rats.

Autor: Edward Pace, Hao Luo, Michael Bobian, Ajay Panekkad, Xueguo Zhang, Huiming Zhang, Jinsheng Zhang

Publikováno v: PLoS ONE, Vol 11, Iss 11, p e0166346 (2016)

Numerous behavioral paradigms have been developed to assess tinnitus-like behavior in animals. Nevertheless, they are often limited by prolonged training requirements, as well as an inability to simultaneously assess onset and lasting tinnitus behavi

Externí odkaz: https://doaj.org/article/c9d49f24a98046d8b3a2b6bc1fa6ddb7

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Rhodium(III)-catalyzed chemodivergent annulations between phenyloxazoles and diazos via C–H activation

Autor: Liangwei Zhu, Xueguo Zhang, Baohua Chen, Peigen Wang

Publikováno v: Chinese Chemical Letters. 32:695-699

Acid-controlled, chemodivergent and redox-neutral annulations for the synthesis of isocoumarins and isoquinolinones have been realized via Rh(III)-catalyzed C H activation. Diazo compounds act as a carbene precursor, and coupling occurs in one-pot pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5646ea75d186e28a4ff4aa169491ad0
https://doi.org/10.1016/j.cclet.2020.06.011

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Acid-catalyzed synthesis of imidazole derivatives via N-phenylbenzimidamides and sulfoxonium ylides cyclization

Autor: Xueguo Zhang, Yuan Tian, Baohua Chen, Xin Guo, Xueying Yang, Mingda Qin, Yafeng Liu

Publikováno v: Tetrahedron. 75:2817-2823

A straightforward method to synthesize imidazole derivatives from amidines and sulfoxonium ylides catalyzed by acids is reported in this study. Specifically, catalyzed by trifluoroacetic acid in DCE solvents can improve synthesis efficiency under met

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe17701c07bb16dd90a4fac2145ff1a5
https://doi.org/10.1016/j.tet.2019.04.004

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Direct synthesis of 2,4,5-trisubstituted imidazoles and di/tri-substituted pyrimidines via cycloadditions of α,β-unsaturated ketones/aldehydes and N′-hydroxyl imidamides

Autor: Baohua Chen, Xueguo Zhang, Ping Wu

Publikováno v: Tetrahedron Letters. 60:1103-1107

An efficient route for the synthesis of 5-acetylimidazoles and di/trisubstituted pyrimidines via iron-catalyzed cross-dehydrogenative coupling (CDC), with excellent tolerance and yields, has been developed. In this report, α,β-unsaturated aldehydes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3062a64f3203fd6ca1148aafef9bedb7
https://doi.org/10.1016/j.tetlet.2019.03.025

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Stomach region stimulated determines effects on duodenal motility in rats

Autor: Robert J. Phillips, Elizabeth A. Baronowsky, Logan Chesney, Terry L. Powley, Bartek Rajwa, Matthew P. Ward, Jennifer L. McAdams, Zhenjun T. Tan, Deborah Jaffey, Xueguo Zhang

Publikováno v: Am J Physiol Regul Integr Comp Physiol

Gastric electrical stimulation (GES) is used clinically to promote proximal GI emptying and motility. In acute experiments, we measured duodenal motor responses elicited by GES applied at 141 randomly chosen electrode sites on the stomach serosal sur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c141eb84fa5ef6b4b77dbb1a3125b5b
https://pubmed.ncbi.nlm.nih.gov/33470183

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Efficient 2-aryl benzothiazole formation from acetophenones, anilines, and elemental sulfur by iodine-catalyzed oxidative C(CO)-C(alkyl) bond cleavage

Autor: Xinglong Yuan, Baohua Chen, Xin Guo, Yafeng Liu, Xueguo Zhang

Publikováno v: Tetrahedron. 74:6057-6062

A novel and efficient iodine-catalyzed one-pot reaction of aromatic amines, acetophenones, and elemental sulfur for the synthesis of 2-aryl benzothiazoles is described. The process involves sequential C−S and C-N bond formation followed by C(CO)−

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94125978166fbab8a04bc172d25058ee
https://doi.org/10.1016/j.tet.2018.08.047

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