52107-47-8Relevant articles and documents
Preparation and evaluation of a triazole-bridged bis(β-cyclodextrin)–bonded chiral stationary phase for HPLC
Shuang, Yazhou,Liao, Yuqin,Wang, Hui,Wang, Yuanxing,Li, Laisheng
, p. 168 - 184 (2019/11/25)
A triazole-bridged bis(β-cyclodextrin) was synthesized via a high-yield Click Chemistry reaction between 6-azido-β-cyclodextrin and 6-propynylamino-β-cyclodextrin, and then it was bonded onto ordered silica gel SBA-15 to obtain a novel triazole-bridged bis (β-cyclodextrin)–bonded chiral stationary phase (TBCDP). The structures of the bridged cyclodextrin and TBCDP were characterized by the infrared spectroscopy, mass spectrometry, elemental analysis, and thermogravimetric analysis. The chiral performance of TBCDP was evaluated by using chiral pesticides and drugs as probes including triazoles, flavanones, dansyl amino acids and β-blockers. Some effects of the composition in mobile phase and pH value on the enantioseparations were investigated in different modes. The nine triazoles, eight flavanones, and eight dansyl amino acids were successfully resolved on TBCDP under the reversed phase with the resolutions of hexaconazole, 2′-hydroxyflavanone, and dansyl-DL-tyrosine, which were 2.49, 5.40, and 3.25 within 30 minutes, respectively. The ten β-blockers were also separated under the polar organic mode with the resolution of arotinolol reached 1.71. Some related separation mechanisms were discussed preliminary. Compared with the native cyclodextrin stationary phase (CDSP), TBCDP has higher enantioselectivity to separate more analytes, which benefited from the synergistic inclusion ability of the two adjacent cavities and bridging linker of TBCDP, thereby enabling it a promising prospect in chiral drugs and food analysis.
Synthesis and pharmacological evaluation of fluorescent and photoactivatable analogues of antiplasmodial naphthylisoquinolines
Bringmann, Gerhard,Gampe, Christian M.,Reichert, Yanina,Bruhn, Torsten,Faber, Johan H.,Mikyna, Martin,Reichert, Matthias,Leippe, Matthias,Brun, Reto,Gelhaus, Christoph
, p. 6104 - 6115 (2008/09/16)
The naphthylisoquinoline (NIQ) alkaloids from tropical Ancistrocladaceae and Dioncophyllaceae plants show high antiplasmodial activities in vitro and in vivo, even against chloroquine-resistant strains of the malaria pathogen. For the directed optimization of these activities, an investigation of the mode of action seems most rewarding. We have therefore embarked on the identification of the respective target protein in Plasmodium falciparum. For this purpose, we have developed a flexible pathway for the synthesis of a chemically divergent series of photoactive and fluorescent derivatives of such alkaloids and succeeded in preparing the first functionalized NIQ derivatives, 10, 12, and 35, suited for fluorescence and photoaffinity labeling experiments. Pharmacological investigations ensured that the modified alkaloid derivatives retained their antiplasmodial activity. The work may pave the way for a further improvement of the activity of these natural products and will thus increase their pharmacological potential as a valuable lead structure against the widespread tropical disease malaria.
