Synthesis and Antimicrobial Activities of Novel Biologically Active Heterocycles: 10H-Phenothiazines, Their Ribofuranosides, and Sulfone Derivatives
作者:Yogesh Dixit、Rahul Dixit、Naveen Gautam、D. C. Gautam
DOI:10.1080/15257770903362206
日期:2009.12.7
This article deals with the synthesis and antimicrobial activity of a series of novel substituted 10H-phenothiazines, their ribofuranosides, and sulfone derivatives. 10H-Phenothiazines were prepared by Smiles rearrangement. These prepared phenothiazines were used as the base to prepare ribofuranosides by treatment with sugar (1-O-acetyl-2,3,5-tri-O-benzoylribofuranose). Sulfone derivatives were prepared
AROMATIC DIAMINE, AN INTERMEDIATE THEREFOR, A METHOD FOR PRODUCING THE AROMATIC DIAMINE, AND A METHOD FOR PRODUCING THE INTERMEDIATE THEREFOR
申请人:SEIKA CORPORATION
公开号:US20180079732A1
公开(公告)日:2018-03-22
A novel asymmetric diamine, diamino-2-(benzothiazole-2-yl)diphenyl ether, derivatives therefor, and an intermediate for the compound such as aminonitro-2-(benzothiazole-2-yl)diphenyl ether, dinitro-2-(benzothiazole-2-yl)diphenyl ether, and derivatives from these. Additionally, another novel asymmetric diamine, diamino-2-(benzoxazole-2-yl)diphenyl ether, derivatives therefor, and intermediate for the compound such as aminonitro-2-(benzoxazole-2-yl)diphenyl ether, dinitro-2-(benzoxazole-2-yl)diphenyl ether, and derivatives from these, and methods for preparing them.
4H-1,4-benzothiazines were prepared by condensation followed by oxidative cyclization of substituted 2-aminobenzenethiols with -diketones in dimethylsulfoxide. On refluxing with 30% hydrogen peroxide in glacial acetic acid, 4H-1,4-benzothiazines yielded 4H-1,4-benzothiazine-1,1-dioxides. Structural evaluation has been done by spectral and elemental analysis. All the synthesized compounds were evaluated for their antibacterial and antifungal activity and all these have shown moderate to high activity against the test microbes. Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional text, figures and tables.