A series of novel pyrazolone derivative were synthesized by two different schemes (scheme-1 by the reaction of phenyl hydrazine and ethyl acetoacetate with substituted benzaldehydes PYR-1 to PYR-4) and (by the reaction of synthesized chalcone with phenyl hydrazine PYR-5) and characterised with its physical parameters (M.P, colour, %yield, solubility etc.). The entire synthesized compound was tested for their antimicrobial activity against Gram-positive and Gram-negative strains of bacteria and brimeshrimp bioassay was conducted for evaluation of cytotoxic activity The Investigation of antimicrobial screening data revealed that most of the tested compounds showed moderate to good antimicrobial activity. And cytotoxicity activity of compounds was also found to be satisfactory.
Lewis-Base-Catalyzed [1 + 2 + 2] Annulation Reaction of Morita–Baylis–Hillman Carbonates with Unsaturated Pyrazolones: Construction of All-Stereogenic Carbon Cyclopentane-Fused Dispiropyrazolones
Lewis-base-catalyzed unexpected [1 + 2 + 2] annulationreaction between Morita–Baylis–Hillman carbonates and unsaturated pyrazolones was developed. The multicyclic cyclopentane-fused dispiropyrazolone constructions containing five contiguous stereogenic centers, including two spiro quaternary centers, were prepared with excellent yields (81–98%) and moderate to good diastereoselectivities (1:1 to 13:1). Further transformation
SYNTHESIS OF BENZOFURANOFURAN DERIVATIVES: MODEL OF NATURAL PRODUCTS
作者:Paulo Marcos Donate、Rosangela da Silva、Gil Valdo José da Silva、Carlos Alemán
DOI:10.1081/scc-100000191
日期:2001.1
Yang, Chunguang; Pang, Lijuan; Wang, Airong, Asian Journal of Chemistry, 2011, vol. 23, # 2, p. 749 - 751
作者:Yang, Chunguang、Pang, Lijuan、Wang, Airong
DOI:——
日期:——
Iridium(III) Complex-Coated Nanosystem for Ratiometric Upconversion Luminescence Bioimaging of Cyanide Anions
作者:Jinliang Liu、Yi Liu、Qian Liu、Chunyan Li、Lining Sun、Fuyou Li
DOI:10.1021/ja205907y
日期:2011.10.5
Chromophoric iridium(III) complex-coated NaYF4: 20%Yb, 1.6%Er, 0.4%Tm nanocrystals are demonstrated as a ratiometric upconversion luminescence (UCL) probe for highly selective detection of cyanide anion and bioimaging of CN- in living cells through inhibition of the energy transfer from the UCL of the nanocrystals to the absorbance of the chromophoric complex. The UCL probe provides a very low detection limit of 0.18 mu M CN- in the aqueous solution.