Results 81 to 90 of about 4,651 (214)

Inhibitory effects of 1,3-thiazine derivatives on melanogenesis

, 2009
ObjectivesThe aim of this study was to identify a novel skin-depigmenting agent from synthetic 1,3-thiazine derivatives.MethodsWe investigated the inhibitory effects of six kinds of 1,3-thiazine derivative on melanogenesis by examining their effects on ...
Sang Keun Ha, Tae-Jin Yoon, Eunjung Moon, Sung-Hoon Kim, Sun Yeou Kim, Mamoru Koketsu, Minjae Lee   +6 more
core   +1 more source

A rapid and effective catalytic pathway for the synthesis of thiazine derivatives employing Zno nanoparticles

Environment Conservation Journal
A sustainable approach has been successfully developed for the synthesis of thiazine derivatives, utilizing an efficient catalytic method. ZnO nanoparticles have demonstrated remarkable catalytic prowess, offering cost-effectiveness, heightened yields ...
Raksha Parag Dhankar, Varsha Vitthalrao Bankar , Manisha Shankar Aswale   +2 more
doaj   +1 more source

Spontaneous resolution and crystal structure of (2S)-2-(3-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-one; crystal structure of rac-2-(4-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-one

Acta Crystallographica Section E: Crystallographic Communications, 2018
The crystal structures of isomeric rac-2-(4-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-one (C16H14N2O3S) (1) and (2S)-2-(3-nitrophenyl)-3-phenyl-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-one (C16H14N2O3S) (2) are reported here.
Hemant P. Yennawar, Heather G. Bradley, Kristen C. Perhonitch, Haley E. Reppert, Lee J. Silverberg   +4 more
doaj   +1 more source

Gold-Catalyzed 1,3-Thiazine Formation and Uncommon Tautomer Isolation

This work represents the first example of a gold-catalyzed formation of 1,3-thiazine/1,3-thiazinane by means of a catalytic approach and further uncommon isolation of the two tautomers.
Guillermo Canudo-Barreras (13223017), M. Concepción Gimeno (1233639), Daniel Salvador (13223020), Raquel P. Herrera (2239531)   +3 more
core   +1 more source

One-pot syntheses of heterocycles containing 1,4-thiazine nucleus

, 2004
413-416One-pot syntheses of heterocycles containing 1,4-thiazine nucleus by the condensation of 5-fluoro-3-methyl-2-aminobenzenethiol with 5,5-dimethyl cyclohexane-1,3-dione, 4-hydroxy coumarin, Chloranil , maleic anhydride, etc is ...
Rajni Gupta, Archana Gupta, Verma, P S, Vibha Shrivastava, R. R. Gupta, Gupta, Archana, P. S. Verma, Shrivastava, Vibha, Gupta, R R, Gupta, Rajni   +9 more
core   +1 more source

2-{(E)-[(2Z)-(3-Chloro-1-methyl-2,2-dioxo-3,4-dihydro-1H-2,1-benzothiazin-4-ylidene)hydrazinylidene]methyl}phenol

Acta Crystallographica Section E, 2012
In the title compound, C16H14ClN3O3S, the thiazine ring adopts a sofa (half-chair) conformation, with an r.m.s. deviation from the mean plane of 0.23 Å.
Muhammad Shafiq, Islam Ullah Khan, Muhammad Zia-ur-Rehman, Muhammad Nadeem Arshad, Abdullah M. Asiri   +4 more
doaj   +1 more source

A facile and effective procedure for the synthesis of new 1,3-thiazine-2-thione derivatives

, 2015
A four-component synthesis of 3,6-dihydro-2H-1,3-thiazine-2-thione derivatives from amines, carbon disulfide, arylglyoxals, and malononitrile in aqueous EtOH, at room temperature is reported.
Zeinab Esfandiarpour (806244), Hossein Mehrabi (806243)   +1 more
core   +1 more source

N-[(2Z,4Z)-4-Benzylidene-6-chloro-1,4-dihydropyrido[2,3-d][1,3]thiazin-2-ylidene]benzamide

Acta Crystallographica Section E, 2012
In the crystal structure of the title compound, C21H14ClN3OS, molecules assemble into inversion dimers via pairs of N—H...N hydrogen bonds involving the N—H hydrogen of the thiazine ring and the N atom of the pyridine ring. There is a
Manuel A. Fernandes, Demetrius C. Levendis, David H. Reid   +2 more
doaj   +1 more source

The synthesis of bicyclic 1,2,3,4-tetrahydro-1,4-benzodiazepin-5-ones from 2-(o-nitrobenzyl)-1,2-thiazine-1-oxide precursors

, 2004
Sulfinylation of o-nitrobenzamide and subsequent hetero Diels–Alder reaction gave a series of 2-(o-nitrobenzoyl)-1,2-thiazine-1-oxides. The 2-(o-nitrobenzoyl)-1,2-thiazine-1-oxides undergo a ring opening reaction with phenyl magnesium bromide to give ...
Loukou, Christina, Hemming, Karl
core   +1 more source

Methyl 2-methyl-4-(oxiran-2-ylmethoxy)-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide

Acta Crystallographica Section E, 2010
In the title compound, C14H15NO6S, the thiazine ring adopts a distorted half-chair conformation. The structure displays several cooperative weak intermolecular C—H...O hydrogen-bonding interactions, giving rise to a two-dimensional sheet ...
Matloob Ahmad, Hamid Latif Siddiqui, Muhammad Zia-ur-Rehman, Mark R. J. Elsegood, George W. Weaver   +4 more
doaj   +1 more source