نتایج جستجو برای: n alanine para styrene sulfonamide

تعداد نتایج: 1275851  

2014
Bishnu P. Koiry Nikhil K. Singha

Copolymerization is an important synthetic tool to prepare polymers with desirable combination of properties which are difficult to achieve from the different homopolymers concerned. This investigation reports the copolymerization of 2-ethylhexyl acrylate (EHA) and styrene using copper bromide (CuBr) as catalyst in combination with N,N,N',N″,N″- pentamethyldiethylenetriamine (PMDETA) as ligand ...

Journal: :Molbank 2023

A new bicyclic sulfonamide derivative, N-(1-(bromomethyl)-7,7-dimethylbicyclo[2.2.1]heptan-2-yl)benzenesulfonamide, was synthesized in the reaction of benzenesulfonamide and camphene presence N-bromosuccinimide acetonitrile. The proposed mechanism investigated involves Wagner–Meerwein rearrangement stage. 3-(Bromomethylene)-2,2-dimethylbicyclo[2.2.1]heptane isolated as a minor product. products...

Journal: :Biochemistry 1998
R Rink D B Janssen

Epoxide hydrolase from Agrobacterium radiobacter AD1 catalyzes the enantioselective hydrolysis of styrene oxide with an E value of 16. The (R)-enantiomer of styrene oxide is first converted with a k(cat) of 3.8 s(-1), and the conversion of the (S)-enantiomer is inhibited. The latter is subsequently hydrolyzed with a k(cat) of 10.5 s(-1). The pre-steady-state kinetic parameters were determined f...

Journal: :Chemcatchem 2021

We developed an organophotoredox-catalyzed reaction for N-alkylation of sulfonamides with aliphatic carboxylic acid-derived redox active esters as alkylating reagents. Under mild and transition metal-free conditions, a series functionalized N-alkylated were prepared. This protocol also enabled the functionalization pharmaceutical drugs bearing sulfonamide or acid moiety. radical-mediated proces...

Journal: :Toxicology letters 2004
Gary P Carlson

Styrene causes both liver and lung damage in non-Swiss albino, CD-1, and other strains of mice. This is considered to be due to the bioactivation of styrene to styrene oxide by cytochromes P450, principally CYP2E1 and CYP2F2. If so, one would expect CYP2E1 knockout mice to be less susceptible to styrene-induced toxicity than wild-type mice. However, previous in vitro and in vivo studies demonst...

Journal: :Chemical communications 2013
Bagineni Prasad B Yogi Sreenivas D Rambabu G Rama Krishna C Malla Reddy K Lalith Kumar Manojit Pal

A new, versatile and direct Pd-mediated method involving intramolecular cyclization of N-(2-iodoaryl)-N-(1-alkyl-1H-indol-2-yl)alkane/arene/heteroarene sulfonamide has been developed leading to a diverse and unique class of indolo[2,3-b]indoles for the potential inhibition of sirtuins.

2003
S. VUKMIROVIĆ

The pseudo-Riemannian manifold M = (M, g), n ≥ 2 is paraquaternionic Kähler if hol(M) ⊂ sp(n,R)⊕sp(1, R). If hol(M) ⊂ sp(n, R), than the manifold M is called para-hyperKähler. The other possible definitions of these manifolds use certain parallel para-quaternionic structures in End(TM), similarly to the quaternionic case. In order to relate these different definitions we study para-quaternionic...

Journal: :Acta poloniae pharmaceutica 2015
Krystyna Poręba Krzysztof Pawlik Krzysztof P Rembacz Ewa Kurowska Janusz Matuszyk Anna Długosz

A series of novel sulfonamide isoxazolo[5,4-b]pyridines were synthesized. The substrates for their synthesis were 3-aminoisoxazolo[5,4-b]pyridine and selected aryl sulfonic chlorides, chlorosulfonic acid and selected amines. Reactions were carried out using the classical and microwave methods. Selected compounds were tested towards antibacterial and antiproliferative activity. The structure of ...

2012
Alaa A.-M. Abdel-Aziz Adel S. El-Azab Magda A. El-Sherbeny Seik Weng Ng Edward R. T. Tiekink

In the title compound, C(14)H(20)N(2)O(2)S, the sulfonamide O atoms lie to one side of the benzene ring and the amino-bicyclo-hepta-nyl to the other side [C(ar)-S-N-C torsion angle = -57.93 (11)°; ar = aromatic]. An intra-molecular N-H⋯N hydrogen bond is formed. In the crystal, a supra-molecular chain is formed along the b axis via N-H⋯O and N-H⋯N hydrogen bonds.

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