Several thiourea and urea derivatives were prepared by the reaction of 4-aminopyrazoles with substituted isothiocyanates or isocyanates. The novel compounds were tested anticonvulsant activity using by pentylenetetrazole-induced seizure (PTZ) and maximal electroshock seizure (MES) tests. Among the tested compounds, thiourea derivatives of 4b were afforded 90 and 100% protection in PTZ and MES tests
PREPARATION OF NEW DERIVATIVES OF THIAZOLE, THIAZOLIDINE, AND THIAZOL-2-YLPYRAZOLO[3,4-D]PYRIMIDINE SULFONAMIDO CONJUGATES
作者:Moustafa M. Khafagy、Ahmed A. El-Maghraby、Saber M. Hassan、Mahmoud S. Bashandy
DOI:10.1080/10426500490475049
日期:2004.10.1
Several new thiazoles ( 3–7 ), thiazolylpyrazole carbonitrile ( 10 , 11 ), and Thiazolidine sulfonamido conjugate derivatives ( 19–26 ) were prepared starting with p-Piperidinesulfonylacetophenones ( 1 , 2 ). The structure of these compounds was elucidated on the bases of elemental analysis, IR, PMR, and massspectra. The antimicrobial activities of some selected compounds are also reported.
Reaction with Hydrazonoyl Halides 64: Synthesis of Some New Triazolino[4,3-<i>a</i>]pyrimidines, 1,3,4-Thiadiazoles, and 5-Arylazothiazoles
作者:Abdou O. Abdelhamid、Abdelgawad A. Fahmi、Basma S. Baaui
DOI:10.1002/jhet.945
日期:2012.9
benzofuran moiety were prepared from the reaction of 2‐(2‐phenylhydrazono)‐1‐(5‐bromobenzofuran‐2‐yl)‐2‐chloroethanone with each of potassium thiocyanate, potassium selenocyanate, alkyl carbodithioate, and pyrmidine‐2‐thione derivatives. All the newly synthesized compounds were confirmed by elemental analysis, spectral data, and alternative route synthesis whenever possible.
由2-(-)的反应制得2,3-二氢-1,3,4-噻二唑,2,3-二氢-1,3,4-硒代二唑和含苯并呋喃部分的三唑啉并[4,3- a ]嘧啶。 2-苯基肼基)-1-(5-溴苯并呋喃-2-基)-2-氯乙酮与硫氰酸钾,硒氰酸钾,碳二硫代烷基酯和嘧啶-2-硫酮衍生物中的每一种。所有新合成的化合物均通过元素分析,光谱数据和可能的替代路线合成得到确认。
NLOphoric mono-azo dyes with negative solvatochromism and in-built ESIPT unit from ethyl 1,3-dihydroxy-2-naphthoate: Estimation of excited state dipole moment and pH study
作者:Umesh Warde、Nagaiyan Sekar
DOI:10.1016/j.dyepig.2016.10.032
日期:2017.2
Catlan scales. Dyes are weakly fluorescent in solvents. Dyes were compared with a parallel series of dyes using 2-naphthol and azo dyesbased on benzothiazole unit to investigate the effect of hydroxyl naphthalene ester moiety on the photophysicalproperties. Solvatochromism was used to calculate the excited state dipole moment, linear and nonlinear optical properties of these dyes. The excited state
Synthesis and characterization of new pyrazole-based thiazoles
作者:Abdou O. Abdelhamid、Sobhi M. Gomha
DOI:10.1080/00397911.2017.1330961
日期:2017.8.3
ABSTRACT A series of new 5-(heteroaryldiazenyl)thiazole incorporating pyrazole moiety have been synthesized through coupling of the thiazole with the appropriate heteroaryldiazonium salts. The newly synthesized compounds were characterized by elemental analysis, spectroscopic (IR, 1H NMR, and Mass) data, and alternative synthesis whenever possible. GRAPHICAL ABSTRACT