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1.
2.
K. K. Turgunov B. Tashkhodzhaev L. V. Molchanov Kh. M. Shakhidoyatov 《Journal of Structural Chemistry》2004,45(5):912-916
The structure of bis-(2,3-pentamethylene-3,4-dihydro-4-oxoquinazolinium) tetrachlorocuprate (II) sesquihydrate, (C13H15N2O)2[CuCl4]·1.5H2O, was determined by single crystal X-ray diffraction. In contrast to the previously studied analogs, the compound contains crystallization water molecules.Original Russian Text Copyright © 2004 by K. K. Turgunov, B. Tashkhodzhaev, L. V. Molchanov, and Kh. M. Shakhidoyatov__________Translated from Zhurnal Strukturnoi Khimii, Vol. 45, No. 5, pp. 955–959, September–October, 2004. 相似文献
3.
A conformational analysis has been made by the method of molecular mechanics of the -apienes — natural sesquiterpenes isolated from plants of the Apiaceae family. The results of the mathematical method with the inclusion of those x-ray structural studies have shown that in the molecules under consideration it is possible to expect the predominant realization of four conformations of the 11-membered ring:14A
8
7
,14A
7
8
,14A
7
8
, and14A
8
7
. These four conformations of unsubstituted -apiene and its natural derivatives have been characterized energetically, and the barriers to their interconversions have been evaluated.Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 197–202, March–April, 1992. 相似文献
4.
I. M. Yusopova B. Tashkhodzhaev A. S. Narzullaev S. S. Sabirov B. T. Ibragimov 《Chemistry of Natural Compounds》1990,26(2):230-231
Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Abu Ali ibn Sina [Avicenna] Tashkent State Medical Institute, Dushanbe. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 279–281, March–April, 1990. 相似文献
5.
A. G. Tozhibaev K. K. Turgunov B. Tashkhodzhaev Kh. M. Shakhidoyatov 《Chemistry of Natural Compounds》2006,42(3):340-344
The structures of deoxypeganine (DOP) hydrochloride and oxalate were solved by x-ray structure analysis. An infinite chain
along the crystallographic c axis was formed in the crystal structure of DOP oxalate. A molecular framework consisting of
Cl anions and DOP cation protonated at N1 was found in the structure of unhydrated DOP hydrochloride. The molecular packing
of the “host” (DOP cation) was pseudoisostructural in the studied ion-molecular crystals but differed from other known DOP
salts. The “guest” molecules (acid anions) in the studied and known DOP salts formed different intermolecular contacts.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 280–283, May–June, 2006. 相似文献
6.
A. A. Ibragimov Z. Osmanov B. Tashkhodzhaev N. D. Abdullaev M. R. Yagudaev S. Yu. Yunusov 《Chemistry of Natural Compounds》1981,17(5):458-463
The proof of the structures of two isomeric alkaloids — nitramine and isonitramine — from two species of plants of the genusNitraria is given. Their diastereoisomerism with respect to the C7 asymmetric atom has been established. This is the first time that alkaloids with the structure of 2-azaspiro[5,5]undecan-7-ol have been found. 相似文献
7.
M. V. Tekzhenetskaya B. Tashkhodzhaev M. R. Yagudaev B. T. Ibragimov S. Yu. Yunusov 《Chemistry of Natural Compounds》1989,25(1):14-18
The structure of bromovasicol has been established on the basis of the results of x-ray structural analysis as 4-bromo-2-(3-hydroxy-2-oxypyrrolinomethl)aniline. Vasicol was isolated from the plantPeganum harmala in the form of 2-(3-hydroxy-2-oxopyrrolidinomethyl)aniline.Institute of the Chemistry of Plants Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 18–23, January–February, 1989. 相似文献
8.
An x-ray structural analysis has been made with the aim of reliably determining the spatial structure of the sesquiterpene lactone ajafinin. It has been established that it has the structure and configuration of 1,2--epoxy-3,4,10-trihydroxy-5,6(H),7(H)-guai-11(13)-en-6,12-olide.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 291–295, May–June, 1986. 相似文献
9.
M. N. Sultankhodzhaev B. Tashkhodzhaev B. B. Averkiev M. Yu. Antipin 《Chemistry of Natural Compounds》2002,38(1):78-82
The known diterpenoid alkaloids karacoline, karakanine, songorine, napelline, 12-acetylnapelline, cammaconine, and a new 7,17-secoalkaloid of the lycoctonine type, secokaraconitine, were isolated from tubers of Aconitum karacolicum. An x-ray structure analysis of the new alkaloid was performed. 相似文献
10.
A. Karimov B. Tashkhodzhaev Ya. V. Rashkes M. K. Makhmudov E. G. Mil'grom 《Chemistry of Natural Compounds》1993,29(1):53-57
A new N-benzylisoquinoline alkaloid — intebrine, with the composition C20H19NO7 — has been isolated fromBerberis integerrima Bunge. The spatial structure of intebrine has been reliably determined by the x-ray structural method (diffractometer, CuK radiation, 972 reflections, direct method, R=0.048). Its chemical behavior, spectral characteristics, and mass-spectrometric fragmentation under electrom impact have been studied.Andizhan State Medical Institute. Institute of the Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedeninii, No. 1, pp. 65–70, January–February, 1993. 相似文献