First synthesis of diaportheone B, an antituberculosis agent isolated from endophytic fungus Diaporthe sp. P133 is reported using two complementary routes, a one step and a three-step sequence. The absolute configuration of diaportheone B was determined by using X-ray crystal structure analysis of its dibromo derivative. In addition, we have prepared several close analogues of diaportheone B an...

In the present investigation, a series of 12 Mannich bases (QP1-12) and 5 Schiff bases (QSP1-5) of pyrazol-5(4H)-one moiety containing 3-(hydrazinyl)-2-phenylquinazolin-4(3H)-one has been synthesized and characterized by physicochemical as well as spectral means. The synthesized Mannich and Schiff bases were screened for their preliminary antimicrobial activity against Gram-positive and Gram-ne...

Translocase I inhibitor compounds derived from capuramycin demonstrated rapid bactericidal activity against several different mycobacterial species. SQ641 was the most active of the compounds, with a MIC of 0.12 to 8 microg/ml, a postantibiotic effect of 55 h, and interesting synergistic effects with other antitubercular drugs.

We report a 4 year old girl with ring enhancing lesions in brain CT, initially diagnosed as neurocysticercosis but did not respond to cysticidal therapy. A Magnetic resonance spectropscopy (MRS) revealed lipid peaks suggestive of tuberculoma which was successfully treated with antituberculosis therapy. This report highlights the role of MRS in the diagnosis of ring enhancing lesios.

Anterior scleritis and episcleritis are a well-known presentation in tuberculosis. The case of a female patient with presumed tuberculous anterior scleritis and episcleritis is discussed in this article. Anterior segment OCT was efficient in diagnosis and evaluation of the therapeutic outcome. Antituberculosis chemotherapy was sufficient to achieve clinical remission.

The reductively activated nitroaromatic class of antimicrobials, which include nitroimidazole and the more metabolically labile nitrofuran antitubercular agents, have demonstrated some potential for development as therapeutics against dormant TB bacilli. In previous studies, the pharmacokinetic properties of nitrofuranyl isoxazolines were improved by incorporation of the outer ring elements of ...

Pyridazine plays a significant role in pharmaceuticals particularly in the field of medicinal chemistry. Several 4-substituted-benzylidene-6-substituted-phenyl-dihydro-pyridazin-3(2H)-one derivatives (3a-q) were synthesized and evaluated for their antimicrobial activities with an aim to obtain promising antitubercular agents. In the first step, 6-aryl-tetrahydro-pyridazin-3-ones (2) were prepar...

Gonca TOSUN, Tayfun ARSLAN, Zeynep İSKEFİYELİ, Murat KÜÇÜK, Şengül ALPAY KARAOĞLU, Nurettin YAYLI5,∗ Department of Chemistry, Faculty of Science, Karadeniz Technical University, Trabzon, Turkey Department of Chemistry, Faculty of Science, Giresun University, Giresun, Turkey Faculty of Engineering and Natural Sciences, Gümüşhane University, Gümüşhane, Turkey Department of Biology, Faculty of Art...

Heterocyclic compounds have paying strong attention interest. Many different derivatives have been prepared and possess various type useful pharmacological activities. A lot of work has been done on five member heterocyclic triazole ring system. Different pharmacological activities of triazole ring and its derivatives have been observed. Triazole derivatives possess a wide range of pharmacologi...