نتایج جستجو برای: 4 triazine

تعداد نتایج: 1305627  

Journal: :Applied and environmental microbiology 1999
J S Karns

Pesticides based on the s-triazine ring structure are widely used in cultivation of food crops. Cleavage of the s-triazine ring is an important step in the mineralization of s-triazine compounds and hence in their complete removal from the environment. Cyanuric acid amidohydrolase cleaves cyanuric acid (2,4,6-trihydroxy-s-triazine), which yields carbon dioxide and biuret; the biuret is subject ...

2015
Katherine A Horner Nathalie M Valette Michael E Webb

Strain-promoted inverse electron-demand Diels-Alder cycloaddition (SPIEDAC) reactions between 1,2,4,5-tetrazines and strained dienophiles, such as bicyclononynes, are among the fastest bioorthogonal reactions. However, the synthesis of 1,2,4,5-tetrazines is complex and can involve volatile reagents. 1,2,4-Triazines also undergo cycloaddition reactions with acyclic and unstrained dienophiles at ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - دانشکده داروسازی 1391

سرطان یکی از مهمترین عوامل مرگ و میر در دنیا است که شیوع و مرگ و میر ناشی از آن در نژادهای مختلف، متفاوت است. در حال حاضر، برای درمان سرطان از روش های مختلفی استفاده می شود که شیمی درمانی یکی از معمول ترین و پر مصرف ترین این روش هاست. مقاومت به داروهای شیمی درمانی، یکی از موانع موفقیت شیمی درمانی در انواع سرطان های مختلف است. بنابراین طراحی داروهای جدیدتر و موثرتر در درمان سرطان همواره مورد توج...

2013
R. Jockers

S-triazines are photosynthetic inhibitors. They have been substituted with co-aminoundecanoic acid. The coupling products have been transformed into triazine aldehydes. These com­ pounds displace radioactive terbutryn and have inhibitory effects on photosynthesis in plants and bacteria. Triazine aldehydes were shown to be effective substrates for bacterial luciferase. A competitive assay betwee...

Journal: :journal of sciences islamic republic of iran 0

4-amino-6-methyl- 1,2,4-triazine-3(2h)-thione-5-0ne (1) was condensed with propargyl bromidein the presence of sodium rnethoxide to afford 3-propargylmercapto- 4-arnino-6-rnethyl-1,2,4-triazin-5-one(2) . transformation of the latter to 8-dihydro- 3-methyl-7-methylene-4-oxo-6h-[1,2,4]triazino [3,4-b] [1,3,4] thiadiazine (3) was performed under the condition of palladium (ii) salt. ring closure o...

Journal: :Advanced photonics research 2022

The 1,3,5-triazine electron acceptor has become one of the most popular building blocks for design thermally activated delayed fluorescence (TADF) materials. Many TADF strategies are first applied in compounds that contain triazines, and there numerous examples organic light-emitting diodes (OLEDs) with triazine-containing emitters show high efficiencies long operating lifetimes. A comprehensiv...

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