ZrO<sub>2</sub>-supported Cu(<scp>ii</scp>)–β-cyclodextrin complex: construction of 2,4,5-trisubstituted-1,2,3-triazoles via azide–chalcone oxidative cycloaddition and post-triazole alkylation
作者:Yarabally R. Girish、Kothanahally S. Sharath Kumar、Umashankar Muddegowda、Neartur Krishnappagowda Lokanath、Kanchugarakoppal S. Rangappa、Sheena Shashikanth
DOI:10.1039/c4ra09970b
日期:——
The ZrO2–Cu2–β-CD complex is an excellent catalyst for the synthesis of N-2-alkylated-1,2,3-triazoles.
ZrO2–Cu2–β-CD复合物是合成N-2-烷基化-1,2,3-三唑的优秀催化剂。
Discovery of Novel Approach for Regioselective Synthesis of Thioxotriaza-Spiro Derivatives via Oxalic Acid
作者:Vindya K. Gopinatha、Hassan A. Swarup、Sathees C. Raghavan、Kempegowda Mantelingu、Kanchugarakoppal S. Rangappa
DOI:10.1055/s-0039-1690204
日期:2019.10
A vital approach for the synthesis of a range of novel thioxotriaza-spiro derivatives is described. These new heterocyclic systems are obtained via oxalic acid catalyzed reaction of α,β-unsaturated ketones in the presence of 5,6-diamino-2-mercaptopyrimidine-4-ols; thus, spiro rings are constructed in one step. Notably, this transformation involves condensation of an amino group followed by enamine
Synthesis of bulky-tailed sulfonamides incorporating pyrido[2,3- d ][1,2,4]triazolo[4,3- a ]pyrimidin-1(5H)-yl) moieties and evaluation of their carbonic anhydrases I, II, IV and IX inhibitory effects
作者:Mohamed Fares、Radwa A. Eladwy、Alessio Nocentini、Soha R. Abd El Hadi、Hazem A. Ghabbour、Ashraf Abdel-Megeed、Wagdy M. Eldehna、Hatem A. Abdel-Aziz、Claudiu T. Supuran
DOI:10.1016/j.bmc.2017.02.037
日期:2017.4
Using celecoxib as lead, two novel series of sulfonamides incorporating the pyridotriazolopyrimidine scaffold have been synthesized and evaluated in vitro as inhibitors against four relevant human (h) carbonicanhydrases (CAs, EC 4.2.1.1), the cytosolic and ubiquitous hCA I and II as well as the transmembrane hCA IV and hCA IX. Most of the reported sulfonamides acted as efficient, low micromolar inhibitors
Facile one pot multicomponent synthesis of novel 4-(benzofuran-2-yl)-2-(3-(aryl/heteryl)-5-(aryl/heteryl)-4,5-dihydro-1<i>H</i>-pyrazol-1yl)thiazole derivatives
ABSTRACT An efficient base catalyzed one pot multicomponent reaction of aryl/hetryl chalcones, thiosemicarbazide and 1-(benzofuran-2-yl)-2-bromoethan-1-one was developed to synthesize the novel 4-(benzofuran-2-yl)-2-(3-(aryl/heteryl)-5-(aryl/heteryl)-4,5-dihydro-1H-pyrazol-1yl)thiazole derivatives. GRAPHICAL ABSTRACT
An improved synthesis of pyrido[2,3-<i>d</i>]pyrimidin-4(1<i>H</i>)-ones and their antimicrobial activity
作者:Mohamed Fares、Soha R. Abd El Hadi、Radwa A. Eladwy、Aly A. Shoun、Marwa M. Abdel-Aziz、Wagdy M. Eldehna、Hatem A. Abdel-Aziz、Paul A. Keller
DOI:10.1039/c8ob00627j
日期:——
expeditious synthesis of 10a was optimized by varying solvents, catalysts and the use of microwave irradiation with the best conditions using DMF as a solvent, I2 (10 mol%) and a 30 minutes reaction time compared to 15 h for classic conventional heating. The pharmacokinetic properties and calculation of drug likeness of 10a suggested good traditional drug-like properties and led to the synthesis of a small