74 Result(s)

Article

Development of Mix Compositions for Façade-Ceramics Production from Raw Materials in Kazakhstan

Aluminosilicate rock used for façade ceramic is investigated. It is shown that shale, whose reserves in Southern Kazakhstan are significant, can be used effectively. The use of shale and refractory clay will m...

A. I. Groshev, I. A. Groshev, A. I. Ismailov in Glass and Ceramics (2015)

Article

Biological Activity of Gossypol and Its Derivatives

Information on gossypol and its derivatives and certain features revealed during a structure-activity analysis were presented.

N. I. Baram, A. I. Ismailov, Kh. L. Ziyaev… in Chemistry of Natural Compounds (2004)

Article

Azo-Derivatives of Gossypol and Its Imines

Azo-coupling of diazotized aromatic amines with gossypol and gossypolimines was studied. The physicochemical properties and interferon-inducing activity of the products were determined. It was found that the i...

K. Zh. Rezhepov, Kh. L. Ziyaev, N. I. Baram, F. G. Kamaev… in Chemistry of Natural Compounds (2003)

Article

Synthesis and Interferon-Inducing Activity of Azo-Derivatives of Gossypol and Its Imines

New azo-derivatives of gossypol and its imines were described. Their physicochemical properties and data on their interferon-inducing activity were presented.

K. Zh. Rezhepov, Kh. L. Ziyaev, N. I. Baram… in Chemistry of Natural Compounds (2002)

Article

Rhamnoglucouronan from Alcea rosea Stems

The acidic polysaccharide rhamnoglucouronan, the structure of which was studied by chromic and periodate oxidation, methylation, partial acid hydrolysis, and ¹³ C NMR spectroscopy, was isolated fromAlcea roseast...

S. K. Atkhamova, R. K. Rakhmanberdyeva, D. A. Rakhimov… in Chemistry of Natural Compounds (2001)

Article

Vegetable Tanning Agents

The distribution and structure of hydrolyzed tannins, the separation of tanning agents and their quantitative determination, methods for preparing tanning extracts, methods for increasing the eff...

S. M. Mavlyanov, Sh. Yu. Islambekov, A. I. Ismailov… in Chemistry of Natural Compounds (2001)

Article

New Azoderivatives of Gossypol

N. I. Baram, Kh. L. Ziyaev, A. I. Ismailov, D. Ziyamov… in Chemistry of Natural Compounds (2000)

Article

Transformation of batridene

Transformations of 1,1′,6,6′,7,7′-hexahydroxy-3,3′-dimethyl-5,5′-diisopropyl-2,2′-dinaphthylidene-8,8′-dibarbituric acid (batridene) in DMSO are studied.

N. I. Baram, F. G. Kamaev, Kh. L. Ziyaev, A. I. Ismailov… in Chemistry of Natural Compounds (2000)

Article

New azo derivatives of gossypol

New azo derivatives of gossypol are described. Their physicochemical properties are reported. The presence of hydroxyazo- and quinonhydrazo-tautomers is proposed.

N. I. Baram, Kh. L. Ziyaev, A. I. Ismailov, D. Ziyamov… in Chemistry of Natural Compounds (2000)

Article

Synthesis of¹⁴C-radioactively labeled samples of batriden

Samples of batriden (a drug based on gossypol) radioactively labeled with¹⁴C in different parts of the molecule have been synthesized. Pharmacokinetic investigations of the¹⁴C-batridens have enabled the mechanism...

V. N. Sumin, A. D. Sakhibov, N. I. Baram, A. I. Ismailov in Chemistry of Natural Compounds (1999)

Article

A study of the hydrolysis of amino derivatives of gossypol at various pH values

The results are given of a study of the hydrolysis of alkyl- and heterylimines of gossypol at various pH values.

N. I. Baram, Kh. L. Ziyaev, B. Khodzhaniyazov… in Chemistry of Natural Compounds (1999)

Article

Gossypol and its derivatives and their complexes in solutions

The results are given of a study of gossypol, its physiologically active derivatives, and their complexes with N-polyvinylpyrrolidone (M.m. 8000) in various media. It has been shown that the production of comp...

Kh. L. Ziyaev, N. I. Baram, B. Khodzhaniyazov… in Chemistry of Natural Compounds (1998)

Article

Synthesis of¹⁴C-radioactively labeled derivatives of gossypol and the study of their pharmacokinetics

The method of obtaining radioactively labeled¹⁴C-gossypol-acetic acid has been improved: from it have been synthesized¹⁴C-derivatives of gossypol and their complexes with N-polyvinylpyrrolidone. A comparative stu...

V. I. Sumin, A. I. Ismailov, N. I. Baram in Chemistry of Natural Compounds (1997)

Article

Plant polysaccharides. VI. Polysaccharides of representatives of the Malvaceae family

S. K. Atkhamova, D. A. Rakhimov, É. L. Kristallovich… in Chemistry of Natural Compounds (1997)

Article

New gossypol imines

Information is given on new gossypol imines. The use of hydrazines as the imine components produces Schiff bases of gossypol existing in the benzoid form.

Kh. L. Ziyaev, F. G. Kamaev, N. I. Baram, L. Biktimirov… in Chemistry of Natural Compounds (1997)

Article

Tannins ofGeranium sanguineum

A study has been made of the phenolic compounds ofGeranium sanguineum. One tannin of the hydrolyzable series has been isolated from the epigeal part, and for this the structure of 1,3-bis-O-digalloyl-2-O-galloyl-...

S. M. Mavlyanov, Sh. Yu. Islambekov, F. G. Kamaev… in Chemistry of Natural Compounds (1997)

Article

Polyphenols of the fruits of some varieties of pomegranate growing in Uzbekistan

S. M. Mavlyanov, Sh. Yu. Islambekov, A. K. Karimdzhanov… in Chemistry of Natural Compounds (1997)

Article

Complex derivatives of gossypol with N-polyvinylpyrrolidone

The results are given of a comparative spectroscopic study of some gossypol derivatives and their complexes with N-polyvinylpyrrolidone.

L. Biktimirov, Kh. L. Ziyaev, B. Khodzhaniyazov… in Chemistry of Natural Compounds (1996)

Article

Molecular and crystal structures of hemigossypolone and gossypolone

The results are given of an x-ray structural investigation of hemigossypolone isolated from the stems of a wiltinfected cotton plant and of gossypolone obtained by oxidizing gossypol.

S. A. Talipov, B. T. Ibragimov, K. M. Beketov… in Chemistry of Natural Compounds (1995)

Article

Phenolic compounds ofScutellaria iscanderi

A. I. Ismailov, A. K. Karinmdzhanov, T. Khudaibergenov… in Chemistry of Natural Compounds (1995)