57965-22-7Relevant academic research and scientific papers
Detection of amine vapors using luminescent xerogels from supramolecular metal-containing gelator
Sasaki, Junpei,Suzuki, Masahiro,Hanabusa, Kenji
, p. 538 - 547 (2018)
Supramolecular fluorescent gelators containing a tris(β- diketonato) complex are synthesized by using gelation-driving chelates, and their gelation abilities are studied with 15 solvents. Thin-layer films are prepared on quartz plates from the solutions and they are studied as chemosensors for amines. Fluorescence-quenching of the thin-layer films upon exposure to saturated primary and secondary amine vapors is monitored to evaluate the abilities of the chemosensors to detect amines. The morphologies of the thin-layer films are observed by transmission electron microscopy (TEM) and discussed in relation to their fluorescence-quenching. The fluorescence-quenching efficiencies upon exposure to saturated primary and secondary amines depend on the basicity and bulkiness of the amines rather than the vapor pressure. The fluorescence-quenching is caused by decomposition of a complex through nucleophilic addition of primary or secondary amines to its carbonyl group. The detection of tertiary amines is performed by monitoring the fluorescence emission from the thin-layer films, which are composed of a ligand and EuCl3. The emergence of fluorescence originates from the formation of fluorescent Eu3+-containing gelator, in which dehydrochloric acid by tertiary amines is a trigger for the complexation.
Discovery of tetrahydropyrazolopyrimidine carboxamide derivatives as potent and orally active antitubercular agents
Yokokawa, Fumiaki,Wang, Gang,Chan, Wai Ling,Ang, Shi Hua,Wong, Josephine,Ma, Ida,Rao, Srinivasa P. S.,Manjunatha, Ujjini,Lakshminarayana, Suresh B.,Herve, Maxime,Kounde, Cyrille,Tan, Bee Huat,Thayalan, Pamela,Ng, Seow Hwee,Nanjundappa, Mahesh,Ravindran, Sindhu,Gee, Peck,Tan, Maria,Wei, Liu,Goh, Anne,Chen, Pei-Yu,Lee, Kok Sin,Zhong, Chen,Wagner, Trixie,Dix, Ina,Chatterjee, Arnab K.,Pethe, Kevin,Kuhen, Kelli,Glynne, Richard,Smith, Paul,Bifani, Pablo,Jiricek, Jan
supporting information, p. 451 - 455 (2013/07/11)
Tetrahydropyrazolo[1,5-a]pyrimidine scaffold was identified as a hit series from a Mycobacterium tuberculosis (Mtb) whole cell high through-put screening (HTS) campaign. A series of derivatives of this class were synthesized to evaluate their structure-activity relationship (SAR) and structure-property relationship (SPR). Compound 9 had a promising in vivo DMPK profile in mouse and exhibited potent in vivo activity in a mouse efficacy model, achieving a reduction of 3.5 log CFU of Mtb after oral administration to infected mice once a day at 100 mg/kg for 28 days. Thus, compound 9 is a potential candidate for inclusion in combination therapies for both drug-sensitive and drug-resistant TB.
Pyrazole derivatives
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Page/Page column 26, (2010/02/07)
A compound of the formula (I): wherein R1 is hydrogen or lower alkyl; R2 is lower alkyl, etc.; R3 is lower alkoxy, etc.; R4 is hydroxy, etc.; X is O, S, etc.; Y is CH or N; Z is lower alkylene or lower alkenylene; and m is 0 or 1; or salts thereof, which are useful as a medicament.
Polar substitutions in the benzenesulfonamide ring of celecoxib afford a potent 1,5-diarylpyrazole class of COX-2 inhibitors
Singh, Sunil K.,Reddy, P. Ganapati,Rao, K. Srinivasa,Lohray, Braj B.,Misra,Rajjak, Shaikh A.,Rao, Yeleswarapu K.,Venkateswarlu
, p. 499 - 504 (2007/10/03)
Several chemical modifications in the N1-benzenesulfonamide ring of celecoxib are presented. The series with a hydroxymethyl group adjacent to the sulfonamide was found to be the most potent modification that yielded many compounds selectively active against COX-2 enzyme in vitro.
