15109-12-3

Upstream product

• 2752-93-4 2,2′-disulfanediylbis(N-(4-chlorophenyl)benzamide) 
• 106-47-8 4-chloro-aniline 
• 147-93-3 Thiosalicylic acid 
• 4892-02-8 Methyl thiosalicylate 
• 119-80-2 2,2'-dithiobenzoic acid 

Downstream Products

• 20054-59-5 3-(4-chloro-phenyl)-2-thioxo-2,3-dihydro-benzo[e][1,3]thiazin-4-one 
• 20054-50-6 3-(4-chloro-phenyl)-benzo[e][1,3]thiazine-2,4-dithione 
• 2620-91-9 2-(4-chlorophenyl)-1,2-benzisothiazol-3(2H)-one 

Relevant academic research and scientific papers

Electrochemical synthesis for benzisothiazol-3(2H)-ones by dehydrogenative N[sbnd]S bond formation

Herein, we report an electrochemical method for the synthesis of benzisothiazol-3(2H)-ones from 2-mercaptobenzamides. The electrochemical reaction proceeds through intramolecular N[sbnd]H/S[sbnd]H coupling cyclization reaction by generating H2 as the nonhazardous side product. Moreover, the developed procedure is highly advantageous due to its short reaction time, mild conditions and wide substrate scope without the employment of metal catalyst and exogenous-oxidant.2009 Elsevier Ltd. All rights reserved.

Electron paramagnetic resonance spectroscopy as a probe of hydrogen bonding in heme-Thiolate proteins

Despite utilizing a common cofactor binding motif, hemoproteins bearing a cysteine-derived thiolate ligand (heme-Thiolate proteins) are involved in a diverse array of biological processes ranging from drug metabolism to transcriptional regulation. Though the origin of heme-Thiolate functional divergence is not well understood, growing evidence suggests that the hydrogen bonding (H-bonding) environment surrounding the Fe-coordinating thiolate influences protein function. Outside of X-ray crystallography, few methods exist to characterize these critical H-bonding interactions. Electron paramagnetic resonance (EPR) spectra of heme-Thiolate proteins bearing a six-coordinate, Fe(III) heme exhibit uniquely narrow low-spin (S = 1/2), rhombic signals, which are sensitive to changes in the heme-Thiolate H-bonding environment. To establish a well-defined relationship between the magnitude of g-value dispersion in this unique EPR signal and the strength of the heme-Thiolate H-bonding environment, we synthesized and characterized of a series of six-coordinate, aryl-Thiolate-ligated Fe(III) porphyrin complexes bearing a tunable intramolecular H-bond. Spectroscopic investigation of these complexes revealed a direct correlation between H-bond strength and g-value dispersion in the rhombic EPR signal. Using density functional theory (DFT), we elucidated the electronic origins of the narrow, rhombic EPR signal in heme-Thiolates, which arises from an Fe-S pI-dI bonding interaction. Computational analysis of the intramolecularly H-bonded heme-Thiolate models revealed that H-bond donation to the coordinating thiolate reduces thiolate donor strength and weakens this Fe-S interaction, giving rise to larger g-value dispersion. By defining the relationship between heme-Thiolate electronic structure and rhombic EPR signal, it is possible to compare thiolate donor strengths among heme-Thiolate proteins through analysis of low-spin, Fe(III) EPR spectra. Thus, this study establishes EPR spectroscopy as a valuable tool for exploring how second coordination sphere effects influence heme-Thiolate protein function.

Co-Catalyzed Intramolecular S-N Bond Formation in Water for 1,2-Benzisothiazol-3(2H)-ones and 1,2,4-Thiadiazoles Synthesis

An efficient and versatile Co-catalyzed intramolecular S-N bond formation in water to synthesize 1,2-benzisothiazol-3(2H)-one and 1,2,4-thiadiazoles derivatives in good to excellent yields was developed. The transformation showed great tolerance with a broad range of substituents. The mother liquor was able to be recycled 6 times with minor loss in product yield.

NOVEL CYCLIC COMPOUND HAVING QUINOLYLALKYLTHIO GROUP

The present invention relates to a synthesis study of novel cyclic compounds having a quinolylalkylthio group represented by the formula (1), and pharmacological actions of the compounds. In the formula, the ring X represents: which may have halogen and/or alkyl; R1 and R2 independently represent hydrogen, alkyl, cycloalkyl, aryl or a (non) aromatic heterocycle; R3 represents qinolyl; A represents sulfur, sulfinyl or sulfonyl; and B represents alkylene.

Antimycobacterial and antifungal isosters of salicylamides

A set of 40 derivatives of 3-hydroxypicolinic acid and 2-sulfanylbenzoic acid, isosteric to salicylanilides was synthesized. The compounds were evaluated for in vitro activity against Mycobacterium tuberculosis, Mycobacterium kansasii and Mycobacterium avium, Candida albicans, Candida tropicalis, Candida krusei, Candida glabrata, Trichosporon beigelii, Aspergillus fumigatus, Absidia corymbifera, Trichophyton mentagrophytes and Microsporum gypseum. Structure-activity relationships of antimycobacterial activity and antifungal activity against T. mentagrophytes and M. gypseum were analyzed by the Free-Wilson method. An increase in antimycobacterial activity was observed only for the sulfanylbenzoic acid derivatives, especially those with the benzyl moiety. The antifungal activity was not significant.