10 LIVRES EN POLONAIS EN RAPPORT AVEC «TAUTOMER»
Découvrez l'usage de
tautomer dans la sélection bibliographique suivante. Des livres en rapport avec
tautomer et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Advances in Heterocyclic Chemistry - Tom 91 - Strona 92
IR spectra and X-ray diffraction studies showed only the normal amino–oxo tautomer of cytosine (88JA8319) and 3-methylcytosine hemihydrate (78AX(B)1730) in the solid state. Owing to importance of cytosine in biochemistry and significant ...
2
Copper-Catalyzed Electrophilic Amination of sp2 and sp3 C−H Bonds
(s, 2H), 1.34 (t, J = 7.2 Hz, 3H enol tautomer), 1.26 (t, J = 7.2 Hz, 3H); Spectroscopic data was identical to that reported previously [94]. O O Et2N **p, N,N-Diethyl-3-oxo-3-phenylpropanamide (44). Compound prepared according to TP2.
3
Organic Chemistry - Strona 1170
WH O N N NW H H N NH2 WHO N N NW H N H NH2 Keto tautomer Guanine Enol tautomer Keto tautomer Enol tautomer Dienol tautomer W H O N N W H O CH 3 W H O N N W H O CH 3 W H H–O N N O CH 3 Thymine Actually, because of the ...
4
An Introduction to Medicinal Chemistry - Strona 715
Thiaburimamide favours the un-ionized imidazole ring over the ionized ring, but there are two possible unionized tautomers. The next question is whether either of these is preferred for receptor binding. Let us return to histamine. If one of the ...
5
Electrical, Optical and Magnetic Properties of Nucleic acid and ...
It is striking that both calculations lead to the separation of the four tautomers into two groups: N(1)H and N(7)H have higher moments than N(3)H and N(9)H (Pullman et al., 1968a, 1969a, 1970). Analogous calculations have been made for ...
6
Recent Developments in Mass Spectrometry in Biochemistry and Medicine
In addition ion m/e = M-116 = 195 only described for tautomer (1) (Fig. 8) by Lhoest (7) as F-NO or F-NH-CH3 was absent in the two tautomer mass spectra. The loss of the TMS radical as a trimethylsiloxy (TMSO) was weak for tautomer (1) m/e ...
7
Photochemistry - Tom 39 - Strona 18
of the conformational mixture with only one conformer of each tautomer of 1-TE surviving. Upon irradiating with UV light (λW200 nm) a matrix containing both tautomeric forms, an unprecedented tautomer selective photochemistry was ...
8
Handbook of Heterocyclic Chemistry - Strona 134
2-Hydroxy derivatives usually exist as the oxo tautomers, unless the hydroxy tautomer is appreciably stabilized by electron-withdrawing or chelating substituents. The tendency for enolic hydroxy compounds to revert to the oxo form can be ...
Alan R. Katritzky, Christopher A. Ramsden, John A. Joule, 2010
9
Organic Chemistry, Part 3 of 3 - Strona 864
of the enol tautomer, acetone about 10–5% of the enol tautomer and acetaldehyde essentially has no enol tautomer. The amount of enol tautomer in carboxylic acids and their derivatives is also less than that found in the ketones. Despite the ...
10
Computational Chemistry: Reviews of Current Trends
Structure of guanine tautomers: (a) geometry of the keto-N9H tautomer in the SI(tit”) state, (b) hydrated form of keto-N9H tautomer in the ground state (top indices) and S1(tit”) state (bottom indices) (c) hydrated form of keto-N7H tautomer in the ...
10 ACTUALITÉS CONTENANT LE TERME «TAUTOMER»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
tautomer est employé dans le contexte des actualités suivantes.
Characterizing Metal Acetylacetonate Complexes Using the Evans …
Acetylacetone (2,4-pentanedione) is a β-diketone that occurs in the form of enol and tautomeric keto mixture. In basic solution, this organic compound is ... «Azom.com, oct 15»
Introduction of Methyl Groups at C2 and C6 Positions Enhances the …
This result suggests that 1 may undergo facile tautomeric interconversion owing to the presence of methyl groups at the C2 and C6 positions of curcumin. «Nature.com, sept 15»
How could a tree make tramadol?
Byproducts of this reaction point to the keto-enamine and its iminium ion tautomer being involved as intermediates. The key step in the proposed biosynthesis of ... «Royal Society of Chemistry, août 15»
Funeral held for girl who died while in foster care
SHE AND A TAUTOMER RUSHED TO THE HOSPITAL SATURDAY WHERE EVA DIED. THE OTHER GIRL IS IN DIRE CONDITION. INVESTIGATORS HAVE ... «WCVB Boston, août 15»
Researchers provide evidence for a non-enzymatic pathway to …
Wang and Hoye provide compelling evidence that this epimerization occurs through a keto-enol tautomerization and subsequent interaction with the solvent. «Phys.Org, juil 15»
Shape-shifting Molecule Can Trick Viruses Like Hepatitis C Into …
In the study titled “Two-dimensional IR spectroscopy of the anti-HIV agent KP1212 reveals protonated and neutral tautomers that influence pH-dependent ... «Hepatitis News Today, avril 15»
molecule tricks viruses into mutating themselves to death
Scientists call this shape-shifted structure a tautomer. ... neutral tautomers that influence pH-dependent mutagenicity,” by Chunte Sam Peng, Bogdan I. Fedeles, ... «UChicago News, avril 15»
Shape-shifting molecule tricks viruses into mutating themselves to …
Scientists call this shape-shifted structure a tautomer. James Watson, SB'47, and Francis Crick proposed this tautomer hypothesis in 1953 when they announced ... «Phys.Org, avril 15»
Computational chemists unpick adenine–thymine bias
The equilibrium between genomic guanine–cytosine (GC) and adenine–thymine (AT) base pairs is known to favour higher AT content. Rare GC tautomers ... «Royal Society of Chemistry, mars 15»
Forced mutations doom HIV
This allowed the researchers to see that once KP1212 inserts itself into the genome, it can switch among five different shapes, or tautomers. Some of these ... «MIT News, juil 14»
