23976-44-5Relevant academic research and scientific papers
Click chemistry approach for the regioselective synthesis of iso-indoline-1,3-dione-linked 1,4 and 1,5 coumarinyl 1,2,3-triazoles and their photophysical properties
Anand, Ashish,Kulkarni, Manohar V.
, p. 722 - 733 (2017/03/27)
Copper-catalyzed reaction of N-propargyl isoindoline-1,3-dione and 4-azidomethyl coumarins / 4-azidomethyl-1-aza coumarins under click chemistry conditions afforded 1,4-disubstituted 1,2,3-triazoles, whereas ruthenium catalysis yielded isomeric 1,5-disubstituted 1,2,3-triazoles. The two regioisomers have been distinguished by NOE studies. UV absorption for a given pair of isomers exhibited similar trend, whereas fluorescence measurements showed considerable differences. Photo physical studies on the interaction of azides with copper and ruthenium have also been performed.
Cyclopropanes in water: A diastereoselective synthesis of substituted 2H-chromen-2-one and quinolin-2(1H)-one linked cyclopropanes
Anand, Ashish,Yenagi, Jayashree,Tonannavar,Kulkarni, Manohar V.
supporting information, p. 2201 - 2205 (2016/04/19)
A one-pot three component reaction has been developed for the synthesis of substituted cyclopropanes employing 4-bromomethyl-2H-chromen-2-one/quinolin-2(1H)-ones, aromatic aldehydes and activated nitriles. The room temperature reaction in aqueous medium has been found to be diastereoselective and high yielding.
Synthesis and anti-bacterial evaluation of 4-aryloxymethyl carbostyrils derived from substructures and degradation products of Vancomycin
Revankar, Hrishikesh M.,Arali, Shweta,Yakkerimath, Shilpa,Revankar, Pooja P.,Naik, Vijaykumar,Anand, Ashish,Kulkarni, Manohar V.
, p. 637 - 642 (2017/01/18)
Vancomycin has been used as an antibiotic selectively against Gram-positive bacteria; however in the past decade they have grown resistant against it. The present work describes synthesis of a series of 4-aryloxymethyl carbostyrils derived from the reaction of 4-bromomethyl carbostryils with degradation products of Vancomycin (ethyl gallate and ethyl ester of N-benzoyl tyrosine ethyl ester). Further, gallate ethers 4a-d and tyrosine ethers 5a-d have been found to be selectively active against Gram-positive bacteria.
A new route for the synthesis of 4-arylacetamido-2-aminothiazoles and their biological evaluation
Madhura,Revankar, Hrishikesh M.,Kulkarni, Manohar V.
, p. 483 - 489 (2015/08/06)
A series of 4-arylacetamido-2-amino- and 2-arylamino-1,3-thiazoles (4a-o) were synthesized in a single step in high yields from ?-bromoacetoacetanilides and thiourea/phenyl thioureas and were characterized by spectral and analytical methods. The compounds were evaluated for their in vitro antibacterial antifungal and antioxidant activities. In vitro antimicrobial evaluation of these compounds indicated their specificity towards Gram-positive species. p-Tolyl and m-chlorophenyl substituents on the arylamino moiety (compounds 4b and 4g) exhibited the lowest minimum inhibitory concentration values. The other compounds exhibited promising antimicrobial and moderate antioxidant activity.
Synthesis and biological activities of some new fluorinated coumarins and 1-aza coumarins
Kalkhambkar, Rajesh G.,Kulkarni, Geeta M.,Kamanavalli, Chandrappa M.,Premkumar,Asdaq,Sun, Chung Ming
experimental part, p. 2178 - 2188 (2009/04/07)
A series of new fluorinated coumarins and 1-aza coumarins have been synthesized and the presence of fluorine in these molecules and its effect on their anti-microbial, anti-inflammatory and analgesic activities are discussed. The results of bioassay showed that these newly synthesized compounds containing fluorine exhibit moderate analgesic and excellent anti-inflammatory and potential anti-bacterial and anti-fungal activities, compared to the other halogenated compounds. All the newly synthesized compounds were characterized by elemental analysis, IR, 1H NMR, 13C NMR, 19F NMR, EI-MS, and FAB-MS. The ORTEP diagram of one of the compounds is reported herein.
