نتایج جستجو برای: oxozolo triazine

تعداد نتایج: 2708  

Journal: :Plant physiology 1968
R H Shimabukuro

The metabolism of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) in the resistant species, corn (Zea mays L.) and sorghum (Sorghum vulgare Pers.) was not the same. In corn, atrazine was metabolized via both the 2-hydroxylation and N-dealkylation pathways while sorghum metabolized atrazine via the N-dealkylation pathway. Atrazine metabolism in corn yielded the metabolites, 2-hydrox...

Journal: :Acta crystallographica. Section C, Crystal structure communications 2002
Nikolaos C Papandreou Stella Makedonopoulou Ekaterini A Antoniadou-Vyza Irene M Mavridis Stavros J Hamodrakas

The title salt, C(18)H(22)N(5)(+).Cl(-), is a member of a new series of lipophilic 4,6-diamino spiro-s-triazines which are potent inhibitors of dihydrofolate reductase. The protonated triazine ring deviates from planarity, whereas the cyclohexane ring adopts a chair conformation. A rather unusual hydrogen-bonding scheme exists in the crystal. There is a centrosymmetric arrangement involving two...

Journal: :ChemistrySelect 2022

A new method for the synthesis of bis(1,3,5-triazine-2,4-diamines) was developed using a one-pot multicomponent approach. The performed acid-catalyzed reaction cyanoguanidine with amines and aldehydes, followed by dehydrogenative aromatization dihydrotriazine intermediates upon heating alkali. Two types were prepared either piperazine as bifunctional amine or terephthaldehyde aldehyde thus affo...

Journal: :Physical chemistry chemical physics : PCCP 2011
Li Zou Yan Liu Nan Ma Ermelinda Maçôas José M G Martinho Mika Pettersson Xingguo Chen Jingui Qin

A series of new hyperbranched polymers containing a 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine core unit and polyfluorene chain arms have been synthesized via Suzuki coupling, and characterized by NMR, IR and GPC. All the polymers exhibit good thermal stability with a high decomposition temperature. By changing the 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine/fluorene ratio the UV-vis absorption and ...

2012
Nasser R. El-Brollosy Ali A. El-Emam Abdulghafoor A. Al-Turkistani Seik Weng Ng

The 1,2,4-triazine ring in the title compound, C(14)H(15)N(3)O(3), is approximately planar (r.m.s. deviation = 0.019 Å); the C atom at the 6-position deviates by 0.026 (2) Å from the mean plane whereas the C atom at the 2-position deviates by 0.166 (4) Å in the opposite direction. The triazine ring is oriented at 8.60 (13)° with respect to the phenyl ring. The imino group is hydrogen-bond donor...

2014
Lidija R Jevrić Sanja O Podunavac-Kuzmanović Jaroslava V Švarc-Gajić Strahinja Z Kovačević Bratislav Ž Jovanović

The properties relevant to pharmacokinetics and pharmacodynamics of four series of synthesized s-triazine derivatives have been studied by Quantitative structure-retention relationship (QSRR) approach. The chromatographic behavior of these compounds was investigated by using reversed-phase high performance thin-layer chromatography (RP-HPTLC). Chromatographic retention (R M (0)) was correlated ...

2013
Ziya Erdem Koç Mustafa Onur Aladag Ahmet Uysal

Two monopodal (2,4-dichloro-6-(3-hydroxytyramine)-1,3,5-triazine) and tripodal (2,4,6-(3-hydroxytyramine)-1,3,5-triazine) s-triazine derivatives were prepared through the reaction of cyanuric chloride (2,4,6-trichloro-1,3,5-triazine) and 3-hydroxytyramine hydrochloride (dopamine hydrochloride). The structures of the compounds were identified by FT-IR, 1H NMR, 13C NMR, thermal analysis and eleme...

2008
Anton V. Dolzhenko Geok Kheng Tan Lip Lin Koh Su Fen Woo Wai Keung Chui

7-Dimethyl-amino-2-phenyl-1,2,4-triazolo[1,5-a][1,3,5]triazin-5-amine crystallized with one mol-ecule of methanol to give the title compound, C(12)H(13)N(7)·CH(3)OH. The triazolo[1,5-a][1,3,5]triazine heterocyclic core is essentially planar as are both amino groups that are involved in π-electron delocalization with the triazolo[1,5-a][1,3,5]triazine nucleus. The methyl groups of the dimethyl-a...

2017
Mustafa Can

Here we show effect of the polyamine polymer chain length to BET isotherms. According to IUPAC classification [1], all three polymers are fitting type 1 physical adsorption isotherm with H3 hysteresis (except for EDA having H2 hysteresis). Moreover, TG and TGA analysis of polymers triazine-ethylenediamine (EDA) and triazine-triethylenetetramine (TETA) are provided. Due to the similarities of th...

Journal: :Molecules 2016
Alan E Enciso Barry Neun Jamie Rodriguez Amalendu P Ranjan Marina A Dobrovolskaia Eric E Simanek

Triazine and PAMAM dendrimers of similar size and number of cationic surface groups were compared for their ability to promote platelet aggregation. Triazine dendrimers (G3, G5 and G7) varied in molecular weight from 8 kDa-130 kDa and in surface groups 16-256. PAMAM dendrimers selected for comparison included G3 (7 kDa, 32 surface groups) and G6 (58 kDa, 256 surface groups). The treatment of hu...

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