40 Result(s)

Article

Interaction of lipid-transport proteins from Nigella sativa seeds with lipid membranes

Three pure lipid-transport proteins (LTPs) were isolated from Nigella sativa seeds. The effects of the three LTPs on release of ANTS probe from the inner volume were studied using fluorescence in liposomes of ...

Yu. I. Oshchepkova, S. Son’kina, B. A. Salakhutdinov… in Chemistry of Natural Compounds (2010)

Article

Membrane-active properties and antiradical activity of gossypol and its derivatives

A novel asymmetric gossypol derivative was synthesized. The antioxidant activity of gossypol and certain of its derivatives at the aldehyde groups and the interaction of these compounds with model membranes we...

I. I. Tukfatullina, K. Z. Tilyabaev, A. Mamadrakhimov… in Chemistry of Natural Compounds (2008)

Article

Clathrates of dianilinegossypol with lower acetate ester homologues: Structure, isomorphism, and morphotropic transitions

The structure of dianilinegossypol clathrates is shown to be sensitive to size of the ester molecule included. The change in the guest component from methyl acetate to amyl acetate is accompanied by two morpho...

S. A. Talipov, B. T. Ibragimov, K. M. Beketov, K. D. Praliev… in Crystallography Reports (2004)

Article

Ionophoric and Complexant Properties of Lagochilin Derivatives

The ionophoric and complexant properties of synthetic derivatives of lagochilin, 3,18-O-isopropylidenelagochilin and 3,18-O-ethylidenelagochilin, were studied by BLM methods, conductometry, and IR spectroscopy...

P. G. Kosymbetov, R. Kh. Ziyatdinova, S. V. Bessonova… in Chemistry of Natural Compounds (2004)

Article

Polymorphism of dianilinegossypol

Polymorphs of dianilinegossypol are obtained by selecting the precipitation medium and the crystallization temperature. Four dianilinegossypol polymorphs are found. Two solvate forms and three polymorphic modi...

K. M. Beketov, S. A. Talipov, B. T. Ibragimov, K. D. Praliev… in Crystallography Reports (2003)

Article

Synthesis, Structure, and Membrane Activity of New Glycyrrhetic Acid Derivatives

Derivatives of 3-O-acetyl-18-βH-glycyrrhetic acid were synthesized. Their structures and membrane activities were studied.

B. A. Salakhutdinov, D. N. Dalimov, T. F. Aripov… in Chemistry of Natural Compounds (2002)

Article

Molecular and crystal structure of 4′-cyanobenzo-15-crown-5

The crystal structure of 4′-cyanobenzo-15-crown-5 is determined by X-ray diffraction. The crystallographic parameters of single crystals are as follows: a = 40.479(6) Å, b = 8.821(2) Å, c = 8.484(2) Å, β = 93.94(...

S. A. Talipov, Z. Karimov, B. T. Ibragimov… in Crystallography Reports (2000)

Article

Contributory presentations/posters

N. Manoj, V. R. Srinivas, A. Surolia, M. Vijayan, K. Suguna… in Journal of Biosciences (1999)

Article

Membrane-active properties of crambin

A thionin-like protein with M. M. 5kDa has been isolated fromCrambe kotschyana seeds. It has been shown that crambin possesses, a low lytic action on erythrocytes but inhibits the Ca-ATPase of the sarcoplasmic re...

B. A. Salakhutdinov, É. T. Tadzhibaeva, M. V. Zamaraeva… in Chemistry of Natural Compounds (1998)

Article

Polymorphism of Inclusion Complexes and Unsolvated Hosts. V. Crystal Structure of the α-Dimorph of the 1 : 2 Dianilinegossypol–DMSO Complex and a 1 : 1 : 1 Inclusion Complex Based on a Mixed Dianilinegossypol/1,4-Dioxane Host Matrix and 1,2-Dichloroethane Guest

Dianilinegossypol forms a 1 : 2 host-guest complex with DMSO:monoclinic, space group P2₁/n, a = 8.522(3), b = 18.034(4), c= 28.462(6) Å, β = 94.14(2)°, V = 4362ų, Z = 4, D x = 1.26 g cm^-3, T = 295 K.Final R valu...

B.T. Ibragimov, K.M. Beketov, S.A. Talipov… in Journal of inclusion phenomena and molecul… (1997)

Article

Polymorphism of Inclusion Complexes and Unsolvated Hosts. II. Structure of the β-Dimorph of the Host-Guest Complex of Dianilinegossypol with Ethylacetate

Depending on crystallization conditions, dianilinegossypol and ethylacetate form low (ambient temperature, α-phase) and high temperature (t = 35°C, β-phase) clathrate modifications. The structure of the α-phas...

K. M. Beketov, B. T. Ibragimov… in Journal of inclusion phenomena and molecul… (1997)

Article

Inclusion complexes of the natural product gossypol. Recognition by gossypol of halogeno methanes. Structure of the dichloromethane complex of gossypol and single crystal conservation after decomposition

The structures of gossypol complexes are extremely sensitive to the halogenomethane present as the guest; e.g. changing the number of Cl atoms in chloromethane derivatives changes the structure of the gossypol...

B. T. Ibragimov, S. A. Talipov, T. F. Aripov in Journal of inclusion phenomena and molecul… (1994)

Article

Influence of thionin on the structure of a bilayer and on the intermembrane exchange of lipid material

It has been shown that in lipid dispersions thionin causes the formation of heterogeneous structures with the production of lipid-enriched “clusters” melting at elevated temperatures. This effect of thionin de...

S. O. Kolusheva, B. A. Salakhutdinov, T. F. Aripov… in Chemistry of Natural Compounds (1994)

Article

An investigation of the membranotropic properties of the plant toxin thionin isolated fromPyrularia pubera

It has been shown by the ESR of spin probes that thionin initially interacts with with negatively charged membranes electrostatically and then passes into the membranes to a depth comparable with the length of...

S. O. Kolusheva, B. A. Salakhutdinov, T. F. Aripov… in Chemistry of Natural Compounds (1993)

Article

Inclusion complexes of the natural product gossypol. Crystal structure of the 2:1 complex of gossypol withm-Xylene

The crystal structure of a 2: 1 inclusion complex of gossypol withm-xylene has been determined by X-ray structure analysis. The crystals of C₃₀H₃₀O₈·0.5C₈ H₁₀ are triclinic, space groupPl⁻,a = 8.478(1),b = 14.087...

B. T. Ibragimov, S. A. Talipov, T. F. ARIPOV… in Journal of inclusion phenomena and molecul… (1990)

Article

X-ray structural investigation of gossypol and its derivatives. X. Unusual inclusion compounds based on gossypol

More than 100 crystalline molecular complexes of gossypol with various organic molecules have been obtained and identified, and for 67 of them single crystals have been grown and their crystallographic paramet...

B. T. Ibragimov, S. A. Talipov, B. N. Dadabaev… in Chemistry of Natural Compounds (1988)

Article

X-ray structural investigation of gossypol and its derivatives. VII. Molecular and crystal structure of dianilinegossypol

A complete x-ray structural investigation of the complex of dianilinegossypol with ethyl acetate has been made and it has been shown that in these crystals the dianilinegossypol gossypol has predominantly the ...

G. B. Nazarov, B. T. Ibragimov, T. F. Aripov in Chemistry of Natural Compounds (1988)

Article

NMR spectroscopy of interaction of some organophosphorus insecticides with liposomes

The interaction of the organophosphorus insecticides GA-41, chlorophos [trichlorfon] and OKh-30 with liposomes from lecithin and a mixture of lecithin and cardiolipin has been studied by NMR spectroscopy on¹H and

I. I. Abdrashitova, T. F. Aripov, F. G. Kamaev… in Chemistry of Natural Compounds (1988)

Article

An investigation of the interaction of cobra venom cytotoxins with liposomes by the fluorescent-probe method

The interaction of cytotoxins V_c1, V_c5, and V_c6 of the venom of the Central Asian cobra with liposomes having a negative surface charge prepared from a mixture of phosphatidylcholine and palmitic acid (1:1, molar...

T. F. Aripov, U. M. Beknazarov, V. G. Omel'yanenko in Chemistry of Natural Compounds (1986)

Article

Molecular and crystal structure of luteidine

The crystal structure of luteidine has been deciphered by x-ray structural analysis; there are two molecules in the independent part of its elementary cell. These symmetrically independent molecules differ in ...

G. B. Nazarov, B. T. Ibragimov, S. A. Talipov… in Chemistry of Natural Compounds (1986)