3988-76-9Relevant articles and documents
Bi(OTf)3 catalyzed disproportionation reaction of cinnamyl alcohols
Chan, Chieh-Kai,Tsai, Yu-Lin,Chang, Meng-Yang
, p. 3368 - 3376 (2017/05/22)
Bi(OTf)3 catalyzed disproportionation reaction of cinnamyl alcohols provides chalcones and benzyl styrenes. The use of various metal triflates is investigated herein for facile and efficient redox transformation. A plausible mechanism has been proposed.
Aluminum chloride-catalyzed C-alkylation of pyrrole and indole with chalcone and bis-chalcone derivatives
Gürdere, Meliha Burcu,?zbek, Oguz,Ceylan, Mustafa
, p. 322 - 331 (2016/03/23)
The AlCl3-catalyzed alkylation of pyrrole (2) with chalcone (1a-i) at a ratio of 8:1 in the presence of 10 mol% AlCl3 gave the solely 2-alkyl pyrroles (3a-i) at room temperature for 12 in good yields. The same reaction was performed with pyrrole (2) and chalcone at a ratio of 1:3 in CH3CN at rt for 3 h to achieve 2,5-dialkyl pyrroles (4a-f). In addition, the reaction of the pyrrole (2) and indole (7) on 1,4-phenylene bis-chalcones (5a-g) at the ratio of 8:1 at rt for 24 h gave the double-addition products 6a-g and 8a-g in good yields, respectively. The structure of the products was confirmed by 1H and 13C NMR spectroscopy and elemental analysis.
Synthesis, cyclooxygenase inhibition, anti-inflammatory evaluation, and ulcerogenic liability of new 1,3,5-triarylpyrazoline derivatives possessing a methanesulfonyl pharmacophore
Abdellatif, Khaled R. A.,Fadaly, Wael A. A.,Azouz, Amany A.
, p. 1 - 7 (2016/10/11)
A new series of 1,3,5-triarylpyrazolines 13a–l was synthesized and all prepared compounds were evaluated for their in vitro COX-1/COX-2 inhibitory activity and in vivo anti-inflammatory activity. All test compounds were more selective for the COX-2 isozyme and showed good in vivo anti-inflammatory activity. Compound 13h was the most COX-2 selective compound (COX-2 selectivity index (SI)=10.23) and the most potent anti-inflammatory derivative (ED50-60.1μmol/kg) in comparison with celecoxib (COX-2 SI=9.29 and ED50=81.4μmol/kg). All screened compounds were less ulcerogenic (ulcer indexes (UI)=0.33–1.33) than aspirin (UI=2.33) and comparable to celecoxib (UI=0.33).