Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 3,3-Bis(3,5-dibromo-4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, is researched, Molecular C21H14Br4O5S, CAS is 76-60-8, about Ligand binding to natural and modified human serum albumin.Application In Synthesis of 3,3-Bis(3,5-dibromo-4-hydroxy-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide.
This paper reports evaluation of ligand binding constants for unmodified or biotinylated HSA (HSAB) for two well-known HSA binding ligands, naproxen and bromocresol green. Results demonstrate differential scanning calorimetry (DSC) is a reliable quant. method for straight-forward and rapid evaluation of ligand binding constants for HSA and modified derivatives DSC measured the thermodn. stability of free and ligand-bound HSA and HSAB at pH = 6.0, 7.4 and 8.0. DSC anal. provided a quant. gauge of responses of HSA and HSAB thermodn. stability to ligand binding. The influence of different levels of biotinylation of HSAB on ligand binding, and how ligand binding varied as a function of pH for these mols. was also examined In the three pH environments, biotinylation increased stability of HSAB alone compared to free HSA at pH 7.4. Stabilities of free protein and ligand-bound complexes varied with pH in the order, pH = 6.0>7.4>8.0. Our anal. approach provided very accurate estimates for known binding constants of these ligands for HSA. Results revealed, for both ligands, extent of biotinylation of HSAB affected binding, reducing binding constants from three to 100-fold. DSC anal. was able to delineate inter-relationships between mol. structure and thermodn. stability of HSA and HSAB bound by ligands; and their variations with pH.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles