Zobrazeno 1 - 10
of 18
pro vyhledávání: '"T. S. Seitembetov"'
Autor:
M. M. Ismagulova, Zh. S. Nurmaganbetov, A. Zh. Turmukhambetov, T. S. Seitembetov, S. M. Adekenov
Publikováno v:
Eurasian Chemico-Technological Journal, Vol 11, Iss 3, Pp 199-205 (2009)
The indole alkaloid harmine was extracted from underground part of Peganum harmala L. With the purpose of obtaining the new biological active derivatives on base of alkaloid harmine the chemical modification was carried out. The p-toluolsulfochlorid,
Externí odkaz:
https://doaj.org/article/99a85332a4a046a18524907eb1bfc5a6
Autor:
T. S. Seitembetov, A. T. Kulyyasov, Yu. V. Gatilov, V. A. Raldugin, I. Yu. Bagryanskaya, Makhmut M. Shakirov, S. M. Adekenov
Publikováno v:
Russian Chemical Bulletin. 47:1390-1394
A new sesquiterpenoid lactone was isolated from terrestrial parts ofArtemisia subchrysolepis Filat. and studied by X-ray diffraction analysis and CD spectroscopy. This compound was called subchrysine and identified as (1R,3S,4E,6R,7S)-3-acetoxy-1-hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::753289ad6a7e1e2c8913de3896c4a46d
https://doi.org/10.1007/bf02495573
https://doi.org/10.1007/bf02495573
Publikováno v:
Chemistry of Natural Compounds. 32:869-872
Alantolactone and isoalantolactone have been epoxidized with peracetic, m-chloroperbenzoic, and trifluoroperacetic acids. The structure of 4(15)-α-epoxyisoalactone has been established by an x-ray structural investigation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fef9c7edf9198c822c4999ea6ab75b3
https://doi.org/10.1007/bf01374017
https://doi.org/10.1007/bf01374017
Publikováno v:
Chemistry of Natural Compounds. 31:192-195
Results are given on the antitumoral activity of grosshemin derivatives. A new grosshemin derivative has been obtained by the interaction of its acetate with hydroxylamine.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::797e295ed0d33147a734d44d93939550
https://doi.org/10.1007/bf01170203
https://doi.org/10.1007/bf01170203
Autor:
S. M. Adekenov, M. M. Shakirov, I. Yu. Bagryanskaya, Yu. V. Gatilov, V. A. Raldugin, A. T. Kulyjasov, T. S. Seitembetov
Publikováno v:
ChemInform. 29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ddf195704169565932b1d0ef174cec0
https://doi.org/10.1002/chin.199842176
https://doi.org/10.1002/chin.199842176
Publikováno v:
Chemistry of Natural Compounds. 33:185-186
Phenolic derivatives ofα-santonin have been synthesized and their antioxidant effect has been studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d52e31f0472e8ba4d22e60099952fef6
https://doi.org/10.1007/bf02291538
https://doi.org/10.1007/bf02291538
Autor:
N. S. Prostakov, T. S. Seitembetov, P. I. Zakharov, V. K. Shevtsov, V. G. Pleshakov, V. P. Zvolinskii
Publikováno v:
Chemistry of Heterocyclic Compounds. 15:328-332
The M+ and [M-H]+ ion peaks are the peaks of maximum intensity in the mass spectra of Schiff bases belonging to the 4-aza-9-fluorenylidenearylamine series. The dependence of the relative intensity of the [M-H]+ fragment on the structures of the I–X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b7f9211e01a24e2cbc3f07677bd2e5d
https://doi.org/10.1007/bf00474103
https://doi.org/10.1007/bf00474103
Publikováno v:
Chemistry of Heterocyclic Compounds. 15:535-540
The mass spectra of 15 compounds of the 4-azaphenanthrene series and their deutero analogs with bulky R substituents (R=-C≡CPh, -CH=CHPh, CHBr-CHBrPh,-CH=CHC6H4OCH3-p, -COOH, -COOC2H5, and -CONHNH2) in the ortho position relative to the nitrogen at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76f69edf351f68f3ca776f7b7b2ac012
https://doi.org/10.1007/bf00773222
https://doi.org/10.1007/bf00773222
Autor:
V. F. Zakharov, N. S. Prostakov, V. P. Zvolinskii, V. G. Pleshakov, T. S. Seitembetov, A. A. Savina
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:99-106
In an investigation of the conditions for the formation of Schiff bases from 3-methyl-2-azafluorenone and arylamines it was shown that the use of boron trifluoride etherate as the catalyst insures the highest yields. The fundamental possibility of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c02c2e6300f37beafec19874c6edb86a
https://doi.org/10.1007/bf00473923
https://doi.org/10.1007/bf00473923
Autor:
G. A. Vasil'ev, T. S. Seitembetov, N. S. Prostakov, V. K. Shevtsov, V. P. Zvolinskii, Alexey V. Varlamov, P. I. Zakharov, V. G. Pleshakov
Publikováno v:
Chemistry of Heterocyclic Compounds. 15:78-85
A mass-spectrometric study of 2- and 4-azafluorenones and their mono- and polymethyl derivatives showed that the presence of a methyl group in the benzene ring leads to a sharp increase in the relative intensity of the [M — H]+ ion peak. In contras
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e9d3649e880df9f6ee333eb00c9c2d8
https://doi.org/10.1007/bf00471205
https://doi.org/10.1007/bf00471205