Antiparasitic activity of synthetic curcumin monocarbonyl analogues against Trichomonas vaginalis
作者:Caroline Carapina da Silva、Bruna Silveira Pacheco、Raquel Nascimento das Neves、Mirna Samara Dié Alves、Ângela Sena-Lopes、Sidnei Moura、Sibele Borsuk、Claudio Martin Pereira de Pereira
DOI:10.1016/j.biopha.2018.12.058
日期:2019.3
herein we report the anti-T. vaginalis evaluation of 21 synthetic monocarbonyl analogues of curcumin, which itself has been reported to possess antiparasitic potential. From the in vitro analysis of the synthetic molecules, untreated trophozoites, and metronidazole at 100 μM, it was observed that three curcumin analogues (3a, 3e, and 5e) exhibited anti-T. vaginalis activity comparable to metronidazole
Homoenolates generated fromenals by nucleophilic heterocyclic carbene (NHC) catalysis undergo a conjugate addition/cyclization sequence with cyclic dienones, culminating in the efficient synthesis of spirocyclopentanones.
H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub>/SiO<sub>2</sub>: An Eco-Friendly Alternative for the Stereo-, Regio- and Chemoselective Claisen-Schmidt Condensation
作者:Bibi Fatemeh Mirjalili、Zahra Zaghaghi
DOI:10.1002/jccs.200800104
日期:2008.6
H 3 PW 12 O 40 /SiO 2 or (PW/SiO 2 ) promotes the regio-, stereo- and chemoselectiveClaisen-Schmidtcondensation with improved yields.
H 3 PW 12 O 40 /SiO 2 或 (PW/SiO 2 ) 促进了区域选择性、立体选择性和化学选择性的 Claisen-Schmidt 缩合,并提高了产率。
Zr(HSO<sub>4</sub>)<sub>4</sub>/SiO<sub>2</sub> as an Efficient Alternative Catalyst for the Claisen-Schmidt Condensation
作者:Bi Bi Fatemeh Mirjalilia、Abddhamid Bamoniri、Masoumeh Alipour、Mohammad Ali Karimi Zarchia
DOI:10.1515/znb-2008-1213
日期:2008.12.1
Zr(HSO4)4/SiO2 promotes the regio-, stereo- and chemoselectiveClaisen-Schmidtcondensation of aromatic aldehydes with ketones under solvent-free conditions with improved yields. The work-up of the reaction mixture is simple, and the catalyst is easily removed from the products by simple filtration.
Chemistry of Acylals, Part IV: BF<sub>3</sub>-Catalyzed Formation of Substituted α,α′-Bis(arylmethylidene)cycloalkanones from Acylals and 1-Cycloalkenyl Trimethylsilyl Ethers
mixtures of an aromatic aldehyde acylal and a 1-cycloalkenyl trimethylsilyl ether in dichloromethane were treated with boron trifluoride at room temperature, the corresponding α,α'-bis(arylmethylidene)cycloalkanones were formed. The yield was sensitive to both the acetal/ether ratio and the structure of the acylal. The best results, up to 97% yield, were obtained when acylals containing a diacetoxy moiety