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Ovsianko SL Chernyavsky EA Minchenya VT Adzerikho IE Shkumatov VM 《Ultrasonics sonochemistry》2005,12(3):219-223
The effect of ultrasound (US) (26.4 kHz, 26 W/cm2) on the activation process of a mixture of chymotrypsinogen and trypsinogen was studied. US led to a significant decrease in proteolytic activity, as well as inhibition of the activation process in general. It was shown that inhibition of proteinase activity under US influence was a consequence of inhibition of chymotrypsinogen-chymotrypsin transformation and the complete proteolytic trypsin degradation in the proenzymes mixture. 相似文献
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Mineyeva I. V. Faletrov Ya. V. Starovoitova V. A. Shkumatov V. M. 《Russian Journal of Organic Chemistry》2022,58(3):268-281
Russian Journal of Organic Chemistry - An efficient procedure has been developed for the synthesis of 1,4-dihydropyridines containing aliphatic and 2-(1-hydroxycyclopropyl)methyl substituents via... 相似文献
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N.V. Loginova Y.V. Faletrov T.V. Koval’chuk N.P. Osipovich G.I. Polozov A.A. Chernyavskaya R.A. Zheldakova I.I. Azarko A.T. Gres O.I. Shadyro V.M. Shkumatov 《Polyhedron》2010
The synthesis and physico-chemical characterization of Fe(II) and Mn(II) complexes of 4,6-di-tert-butyl-3[(2-hydroxyethyl)sulphanyl]-1,2-dihydroxybenzene (HLI) and 2-amino-4,6-di-tert-butylphenol (HLII) were carried out. Antibacterial activity of the Co(II), Fe(II) and Mn(II) complexes was evaluated in comparison with Cu(II) complexes and three common antibiotics; it was found to follow the order: (1) Сu(LI)2 > Сo(LI)2 > Fe(LI)2 ? Mn(LI)2 > HLI; (2) Сu(LII)2 > Сo(LII)2 > HLII > Fe(LII)2 ? Mn(LII)2; and their reducing ability (determined electrochemically) followed the same order. Spectrophotometric investigation was carried out in order to estimate the rate of the reduction of bovine heart сytochrome c with the ligands and their metal(II) complexes. NADPH:cytochrome P450-reductase was found to increase the rate of сytochrome c reduction with HLI and HLII ligands, while adrenodoxin in couple with NAD(P)H: adrenodoxin reductase had no substantial effect thereon. It was shown that the reduction of сytochrome c with these compounds cannot be related solely to the facility of their oxidation оr ionization. 相似文献
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Reduction of 17-hydroxyprogesterone (1) with NaBH
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produces 17,20-dihydroxypregn-4-en-3-one (2) and pregn-4-en-3,17,20-triol (3) 相似文献
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