نتایج جستجو برای: 3 thiazole

تعداد نتایج: 1812778  

Journal: :YAKUGAKU ZASSHI 1959

Journal: :Acta Chimica Slovenica 2023

The benzo[d]thiazole derivatives 4a–c were synthesized and used for the synthesis of thiophene 6a–f. They form arylhydrazone 8a–i which capable to pyridazine 9a–i 10a–i. latter compounds reacted with thioglycolic acid produce thiazole 12a–i 13a–i, respectively. 15a–c also produced from through their reactions elemental sulfur phenylisothiocyanate. Further heterocyclization 15a carried out deriv...

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].

Journal: :iranian journal of chemistry and chemical engineering 0

a facile and efficient one-pot three-step process for the synthesis of 5-acetyl-2-imino-4-methylthiazoles via the cyclocondensation of 3-thiocyanatoacetylacetone with various hydrazine or hydrazide derivatives in etoh has been developed. 3-thiocyanatoacetylacetone itself has been synthesized as the intermediate from substitution reaction of thiocyanate with 3-chloroacetylacetone. better results...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2010
Ivanka Stankova Stoyan Schichkov Kalina Kostova Angel Galabov

New acyclovir esters with peptidomimetics were synthesized and evaluated in vitro for their antiviral activity against the replication of Herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2). The influence of peptidomimetics containing oxazole and thiazolyl-thiazole moieties on the antiviral activity is also reported. The esters were synthesized using the coupling reagents N-ethyl-N'-(3-dimet...

2015
Rodrigo V. Pirovani Gilmar A. Brito Rosimeire C. Barcelos Ronaldo A. Pilli Orazio Taglialatela-Scafati

Lyngbyabellin M is a non-ribosomal peptide synthetase/polyketide synthase derived metabolite isolated from the cyanobacterium M. bouillonii displaying thiazole rings and a distinct chlorinated octanoic acid chain. Its absolute configuration was proposed based on the comparison of its spectroscopic data with those of other representatives of this family of marine natural products, as well as deg...

Journal: :Journal of bacteriology 1970
A Iwashima Y Nose

Phenylalanine inhibited thiazole biosynthesis in a thiamine-regulatory mutant of Escherichia coli, and the inhibition was overcome by tyrosine.

Journal: :ACS chemical biology 2013
Carolin Holzhauser Renate Liebl Achim Goepferich Hans-Achim Wagenknecht Miriam Breunig

The combination of thiazole orange and thiazole red as an internal energy transfer-based fluorophore pair in oligonucleotides provides an outstanding analytical tool to follow DNA/RNA hybridization through a distinct fluorescence color change from red to green. Herein, we demonstrate that this concept can be applied to small interfering RNA (siRNA) to monitor RNA integrity in living cells in re...

2016
Xiao-Wei Gao Hong-Xin Liu Zhang-Hua Sun Yu-Chan Chen Yu-Zhi Tan Wei-Min Zhang

Activity-guided isolation of the fermentation broth of the deep-sea derived fungus Acaromyces ingoldii FS121, which was obtained from the China South Sea, yielded a new naphtha-[2,3-b]pyrandione analogue, acaromycin A (1) and a new thiazole analogue, acaromyester A (2), as well as the known compound (+)-cryptosporin (3). Their structures, including absolute configurations, were determined by ex...

Journal: :The Journal of antibiotics 1980
R Cricchio P Antonini G Sartori

The thiazorifamycins are derived from rifamycin S and cysteine; rifamycins P and Verde are formed by chemical reactions, while rifamycin Q synthesis involves obligatory enzymatic assistance. All antibiotics come from a common six-member precursor lacking C-1 of cysteine; the thiazin-2-one ring of rifamycin Verde retains both C-2 and C-3 of cysteine, while the thiazole ring of rifamycins P and Q...

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