This work was undertaken to investigate the lipopolysaccharide from gram-negative, plant-growth-promoting diazotrophic rhizobacterium Azospirillum brasilense SR55 isolated from the roots of wheat in Saratov oblast. The lipopolysaccharide was extracted from the outer membrane with phenol, and its chemical makeup was studied.
The nature of influence of microwaves on the process of dissolution of a crystallizable polymer, the primary level of supramolecular order and the formation kinetics of the secondary one in aqueous solutions of polydryl alcohol was studied. Microwaves were found to significantly reduce the period of visually-controlled dissolution of the polymer.
Reactions of 3-R-2,4-diacetyl(diethoxycarbonyl)-5-hydroxy-5-methylcyclohexanones and data on the structure of these compounds and products of their conversion are summarized. The influence of substitutes on the tautomeric equilibrium of cyclohexanones is demonstrated. Amines of a certain degree of saturation are shown to form depending on amination conditions.
The data about synthesis, stereochemistry and reactivity of asymmetric conjugated cyclohexadienones are generalized. Experimental conditions are developed for every type of compound, and their configuration is established. On the basis of conjugated dienones are synthesized earlier unknown heteroarylsubstituted hexahydroindazoles. The regiosecificity and regioselectivity of these compounds formation are established depending on the nature of heterocyclic substitute.
The results of our study of interactions between 1,3-dicarbonylic compounds of the cyclohexane series and binucleophilic reagents (hydrazines, hydroxyamine, o-phenylendiamine, ethylene glycol, ethanolamine) to produce carbo- and heterocyclic compounds of novel series are summarized.
The possibility of interfering the lectin activity of the higher fungus, basidiomycete Lentinus edodes by means of the inorganic components of liquid nutrient medium has been shown. A relationship between the presence of double-charged metal cations in the culture medium and the activity of extracellular lectins of L. edodes has been found.
The different possibilities of synthesis of amphiphilic β-cyclodextrin bromoderivatives containing various number of bromine atoms in cyclodextrin molecule have been demonstrated.
Influence of the cation surface-active materials (CSAM) on the reaction of interaction of quinones with 2,4-dinitrophenylhydrazine (DNPH) has been investigated. Optimal conditions for such reactions subject to the states of initial reactants in the HCl media were found.
Approaches to search of color reaction on local anesthetics are formulated. Reaction of interaction of lidocaine with methyl orange is investigated. The structure is established and the opportunity of application of the given reaction for extraction-photometric definition of lidocaine is appreciated.
