The purpose of the present invention is to provide a compound having excellent antibacterial activity against
mycobacterium tuberculosis
, multidrug-resistant tuberculosis bacteria, and/or non-tuberculous acid-fast bacteria. A compound represented by formula [I]:
(in the formula, each symbol is as described in the attached specification), or a salt thereof can be used to diagnose, prevent, and/or treat tuberculosis.
Synthesis of 2-styryl-quinazoline and 3-styryl-quinoxaline based sulfonate esters <i>via</i> sp<sup>3</sup> C–H activation and their evaluation for α-glucosidase inhibition
Synthesis of 2-styryl-quinazolines and 3-styryl-quinoxaline based sulfonates is reported via sp3 C–H functionalization in the presence of triethylamine (10 mol%). The resulting compounds were tested for α-glucosidase enzyme inhibition (in vitro) using acarbose as a standard drug (IC50 = 33 ± 2.65 μM) because α-glucosidases increase the carbohydrate digestion, and therefore the blood glucose levels
glyoxalase enzymes represent a cellular defence system against the accumulation of cytotoxic α- oxoaldehydes leading to apoptosis. The potential of glyoxalase inhibitors to act as novel anti-cancer agents for drugresistant tumours that over-express glyoxalase is currently under investigation. In the present study, a series of 6- sulfamoylsaccharin and 1,2-benzoxathiine 2,2-dioxide (sulfocoumarin - coumarin
A simple and reproducible procedure for the synthesis of bioisosteres of coumarin—1,2-benzoxathiine 2,2-dioxide is presented. The developed method is based on the intramolecular aldol cyclization of derivatives of mesylsalicyl aldehydes in the presence of strong organic bases, where best results were obtained with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). It has been shown that depending on the nature
The stereoselectivesynthesis of the tetracyclic intermediate 3 for (+)-manzamine A (1) has been achieved. The key features of this stereoselectivesynthesis of 3 are the Rh-catalyzed asymmetric hydrogenation and a diastereoselective intermolecular Diels-Alder reaction. The 8-membered ring is efficiently constructed utilizing our Ns-strategy.