全文获取类型
收费全文 | 210篇 |
免费 | 0篇 |
专业分类
化学 | 210篇 |
出版年
2022年 | 2篇 |
2021年 | 2篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 2篇 |
2016年 | 5篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 7篇 |
2012年 | 3篇 |
2011年 | 3篇 |
2010年 | 5篇 |
2009年 | 3篇 |
2008年 | 8篇 |
2007年 | 10篇 |
2006年 | 18篇 |
2005年 | 12篇 |
2004年 | 9篇 |
2003年 | 11篇 |
2002年 | 5篇 |
2001年 | 7篇 |
2000年 | 5篇 |
1999年 | 9篇 |
1998年 | 7篇 |
1997年 | 2篇 |
1996年 | 4篇 |
1995年 | 5篇 |
1994年 | 3篇 |
1993年 | 7篇 |
1992年 | 10篇 |
1991年 | 10篇 |
1990年 | 5篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 3篇 |
1983年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有210条查询结果,搜索用时 46 毫秒
1.
R. I. Jalmakhanbetova V. A. Raldugin I. Yu. Bagryanskaya Yu. V. Gatilov M. M. Shakirov G. A. Atazhanova S. M. Adekenov 《Chemistry of Natural Compounds》2007,43(5):552-554
Adducts of dihalocarbenes generated from chloroform and bromoform were prepared by reaction with estafiatin guaianolide. Their
structures were established by XSA.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 453–455, September–October, 2007. 相似文献
2.
A. V. Boldashevskii Zh. K. Tukhmetova Sh. B. Kasenova S. M. Adekenov A. Nukhuly B. K. Kasenov A. M. Gazaliev S. D. Fazylov 《Russian Journal of Applied Chemistry》2006,79(10):1705-1708
Results of thermochemical studies of a new compound, potassium morpholinodithiocarbamate, are presented. The enthalpies of its solution in water at various dilutions and the specific heat at 173–348 K were examined by the experimental methods of isothermal and dynamic calorimetry. 相似文献
3.
E. M. Suleimenov F. M. Smagulova O. V. Morozova V. A. Raldugin I. Yu. Bagryanskaya Yu. V. Gatilov V. I. Yamovoi S. M. Adekenov 《Chemistry of Natural Compounds》2005,41(6):689-691
The five known lactones matricarin, austricin, canin, and achillin guaianolides and argolide germacranolide and the two flavonoids
eupatilin and its 7-O-methyl ester were isolated for the first time from the aerial part of Artemisia albida Willd. The structure of eupatilin was confirmed by an x-ray structure analysis.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 568–570, November–December, 2005. 相似文献
4.
K. M. Turdybekov S. M. Adekenov S. V. Lindeman Yu. T. Struchkov 《Chemistry of Natural Compounds》1990,25(6):669-671
An x-ray structural study has been made of the sesquiterpene lactone austricin: diffractometer, MoK radiation, 1147 reflections, direct method, R=0.045. The spatial structure of the molecule has been determined. The conformation of the pentane carbocycle is 1-envelope, of the heptane ring 1,10, 7-chair, and of the lactone ring 7-envelope. The lactone ring is trans-linked with the guaiane skeleton.Institute of Organic Synthesis and Coal Chemistry, Kazakh SSR Academy of Sciences, Karaganda. A. N. Nesmeyanov Institute of Heteroorganic Compounds, USSR Academy of Sciences, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 788–791, November–December, 1989. 相似文献
5.
D. M. Turdybekov K. M. Turdybekov E. V. Burdel'naya A. Zh. Turmukhambetov S. M. Adekenov Yu. V. Gatilov 《Chemistry of Natural Compounds》2003,39(1):19-21
The structure of lappacontine hydrobromide hydrate was solved by an x-ray structure analysis. 相似文献
6.
S. M. Adekenov K. A. Aituganov K. M. Turdybekov S. V. Lindeman Yu. T. Struchkov 《Chemistry of Natural Compounds》1991,27(5):575-579
The new germacranolide argolide has been isolated from the epigeal part ofArtemisia glabella, and its structure has been shown by its conversion into oxopelenolide B. From the results of an x-ray investigation it is
suggested that argolide has the spatial structure of 3-oxo-4α,7α,6β(H)-germacra-1(10),11(13)-dien-6,12-olide.
Institute of Organic Synthesis and Coal Chemistry, Kazakh Academy of Sciences, Karaganda. A. N. Nesmeyanov Institute of Organometallic
Chemistry, Russian Academy of Sciences, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 653–657, September–October,
1991. 相似文献
7.
K. M. Turdybekov T. T. Edil'baeva V. A. Raldugin M. M. Shakirov A. T. Kulyyasov S. M. Adekenov 《Chemistry of Natural Compounds》1998,34(2):141-144
A new sesquiterpene lactone having the structure 3-acetoxy-1-hydroxy-6, 7(H)-germacra-4,10(14), 11(13)-trien-6, 12-olide has been isolated fromArtemisia subchrysolepis Filat. and has been called subchrysin. Its stereochemistry has been established by x-ray structural analysis.Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 176–180, March–April, 1998. 相似文献
8.
S. M. Adekenov K. M. Turdybekov K. A. Aituganoav S. V. Lindeman Yu. T. Struchkov S. N. Shaltakov 《Chemistry of Natural Compounds》1994,29(6):735-739
The new sesquiterpene lactone 1,10-dihydroxydihydroxyarglabin has been isolated from the epigeal part ofArtemisia glabella Kar. et Kir., and its structure has been established on the basis of spectral characteristics, independent synthesis, arglabin, and an x-ray structural investigation.Institute of the Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 825–830, November–December, 1993. 相似文献
9.
The selective dehydrogenation of the eudesmanolide -santonin and its alkylation with the introduction of an allyl fragment into its -lactone ring are described. It has been established that these reactions are regio- and stereo-selective. The structures of the compounds obtained were determined from their IR, UV, PMR, and mass spectra.Institute of Organic Synthesis and Coal Chemistry, Kazakhstan Academy of Sciences, Karaganda. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 518–522, September–October, 1992. 相似文献
10.
R. I. Dzhalmakhanbetova S. B. Akhmetova V. A. Raldugin Yu. V. Gatilov G. A. Atazhanova S. M. Adekenov 《Chemistry of Natural Compounds》2006,42(3):307-309
A tetrabromo derivative of arglabin was synthesized stereoselectively. The molecular structure of the new compound was established
using PMR and 13C NMR spectra and an x-ray structure analysis. Its antifungal activity was demonstrated.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 253–254, May–June, 2006. 相似文献