نتایج جستجو برای: thiazoles

تعداد نتایج: 839  

Journal: :Chemical communications 2014
Keyin Liu Ying Wen Ting Shi Yi Li Fuyou Li Yi-lei Zhao Chunhui Huang Tao Yi

Thiazole orange-modified diarylethene (1) shows weak fluorescence but no photochromism in aqueous solution. When binding with DNA, the fluorescence of 1 is enhanced drastically and the photochromic reactivity is unlocked. This kind of DNA-responsive photoswitchable system can be used for imaging nucleic acids within cells.

Journal: :Chemical communications 2009
Javier Ruiz Bernabé F Perandones

Oxazole and thiazole molecules N-coordinated to manganese(i) are transformed into their corresponding 2,3-dihydrooxazol-2-ylidene and 2,3-dihydrothiazol-2-ylidene carbene tautomers by acid-base reactions, and subsequently transmetalated to gold(i), via isolable heterometallic intermediates.

2017
Robert J. Trachman Natalia A. Demeshkina Matthew W.L. Lau Shanker Shyam S. Panchapakesan Sunny C.Y. Jeng Peter J. Unrau Adrian R. Ferré-D’Amaré

Genetically encoded fluorescent protein tags have revolutionized proteome studies, whereas the lack of intrinsically fluorescent RNAs has hindered transcriptome exploration. Among several RNA-fluorophore complexes that potentially address this problem, RNA Mango has an exceptionally high affinity for its thiazole orange (TO)-derived fluorophore, TO1-Biotin (Kd ∼3 nM), and, in complex with relat...

2007
Gabriel Navarrete-Vázquez Hermenegilda Moreno-Diaz Rafael Villalobos-Molina Samuel Estrada-Soto Hugo Tlahuext

The title compound, C(15)H(14)N(2)O(3)S(2), is of inter-est with respect to its biological activity. The crystal structure is stabilized by inter-molecular N-H⋯N, C-H⋯O and C-H⋯π hydrogen-bonding inter-actions, as well as offset π-π inter-actions [distance between the centroids of the aryl and thiazole rings of adjacent molecules of 3.954 (2) Å].

2016
Chandrakant Pawar

A series of novel molecules containing thiazole and indazole ring structure were designed and synthesized. The compounds are synthesized on gram scale by using series of reactions having vicarious reaction and coupling reactions. We have optimized all the reaction steps for getting good yields. For first time we have synthesized substituted indazole acetic acid which is coupled with different s...

Journal: :Chemical & pharmaceutical bulletin 2000
H Takechi Y Oda N Nishizono K Oda M Machida

In order to find a highly sensitive fluorophore, 3-azolyl-7-diethylaminocoumarin derivatives were synthesized. Both the absorption and fluorescence maxima of the coumarin-thiazole compounds showed red shifts with increases of the molar absorptivities and fluorescence intensities, in comparison with those of the corresponding coumarin-oxazole compounds. Among them, 3-(5-ethoxycarbonyl-1,3-thiazo...

Journal: :Chemical communications 2013
Sudipta Bhowmik Rabindra Nath Das Bibudha Parasar Jyotirmayee Dash

A variety of logic operations such as XNOR, NOR, AND, NAND, NOT have been designed with pH as an external modulator by choosing thiazole orange (TO) and a c-kit2 promoter quadruplex as two inputs and fluorescence signals of pyridyl bis-indole amide (PBIA) and TO as two outputs.

Journal: :Biochemistry 1999
N L Kelleher C L Hendrickson C T Walsh

To produce the antibiotic Microcin B17, four Cys and four Ser residues are converted into four thiazoles and four oxazoles by the three subunit Microcin B17 synthetase. High-resolution mass spectrometry (MS) was used to monitor the kinetics of posttranslational heterocyclic ring formation (-20 Da per ring) and demonstrated the accumulation of all intermediates, from one to seven rings, indicati...

Journal: :Magnetochemistry 2022

This review summarizes the data on stereochemical structure of functionalized azoles (pyrazoles, imidazoles, triazoles, thiazoles, and benzazoles) related compounds obtained by multipulse multinuclear 1H, 13C, 15N NMR spectroscopy quantum chemistry. The stereochemistry is a challenging topic theoretical research, as correct interpretation their chemical behavior biological activity depends unde...

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