Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Natalya B. Khripach"'
Autor:
Vladimir A. Khripach, Vladimir N. Zhabinskii, Galya P. Fando, Natalya B. Khripach, Bernd Schneider
Publikováno v:
ARKIVOC, Vol 2008, Iss 9, Pp 20-28 (2008)
Externí odkaz:
https://doaj.org/article/b4f9154ee958427284e629e4974a7723
Autor:
Galina V. Ivanova, Dmitrii V. Tsavlovskii, Alexander Yu. Misharin, Vladimir A. Khripach, Alexander S. Lyakhov, Vladimir N. Zhabinskii, Galina P. Fando, Natalya B. Khripach
Publikováno v:
Journal of Molecular Structure. 975:242-246
A comparative conformational study of steroidal side chain of (22R,23R)- and (22S,23S)-dihydroxy stigmastane derivatives was performed using single crystal X-ray diffraction and NMR spectroscopy. The preferred conformation in solution was shown to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc006b2bddd2370ecdc34f4d749ec9e7
https://doi.org/10.1016/j.molstruc.2010.04.030
https://doi.org/10.1016/j.molstruc.2010.04.030
Autor:
M. N. Coltsa, Pavel F. Vlad, Natalya B. Khripach, Alexandru Ciocarlan, Alexandr V. Baranovsky
Publikováno v:
Synthetic Communications. 38:3960-3972
This article describes a new efficient synthesis of drim-7,9(11)-diene and its hydroxylated derivates from drim-8-en-7-one. Reduction of this ketone with NaBO4 in the presence of CeCl3 · 7H2O afforded regio- and stereoselectively drim-8-en-7β-ol in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::665a7bb8e82d8c2079caa85e3cc0ba52
https://doi.org/10.1080/00397910802241399
https://doi.org/10.1080/00397910802241399
Autor:
Natalya B. Khripach, Vladimir A. Khripach, Bernd Schneider, Vladimir N. Zhabinskii, Galya P. Fando
Publikováno v:
ARKIVOC
ARKIVOC, Vol 2008, Iss 9, Pp 20-28 (2008)
ARKIVOC, Vol 2008, Iss 9, Pp 20-28 (2008)
A new synthetic approach is described for the preparation of steroidal 1-oxo-5α-alcohols. A key step in the synthesis was the [2,3]sigmatropic rearrangement of allylic 3α-selenide ensuring the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1cf6b581972330add64de0b1f3e4725
https://doi.org/10.3998/ark.5550190.0009.903
https://doi.org/10.3998/ark.5550190.0009.903
Autor:
Galina P. Fando, Natalya B. Khripach, Vladimir N. Zhabinskii, Anna I. Kuchto, Marinus B. Groen, Aede de Groot, Jaap van der Louw, Vladimir A. Khripach
Publikováno v:
Steroids 71 (2006) 6
Steroids, 71, 445-449. Elsevier Inc.
Steroids, 71(6), 445-449
Khripach, V A, Zhabinskii, V N, Fando, G P, Kuchto, A I, Khripach, N B, Groen, M B, Louw, J P E & Groot, A M E 2006, ' A new type of steroids with a cyclobutane fragment in the AB-ring moiety ', Steroids, vol. 71, pp. 445-449 . https://doi.org/10.1016/j.steroids.2006.01.010
Steroids, 71, 445-449. Elsevier Inc.
Steroids, 71(6), 445-449
Khripach, V A, Zhabinskii, V N, Fando, G P, Kuchto, A I, Khripach, N B, Groen, M B, Louw, J P E & Groot, A M E 2006, ' A new type of steroids with a cyclobutane fragment in the AB-ring moiety ', Steroids, vol. 71, pp. 445-449 . https://doi.org/10.1016/j.steroids.2006.01.010
The synthesis of a 5,10-seco steroid containing two double bonds in a AB-macrocycle as well as the preparation of a steroidal skeleton with a cyclobutane fragment is described. The structures of these compounds are different from those of natural ste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bee6b5c5f0025ef6e17f658298082d47
https://research.vu.nl/en/publications/4e9cdd0f-3ce2-43ed-9e09-75dc2e060654
https://research.vu.nl/en/publications/4e9cdd0f-3ce2-43ed-9e09-75dc2e060654
Autor:
A. V. Antonchick, Vladimir N. Zhabinskii, Vladimir A. Khripach, Andrey P. Antonchick, Natalya B. Khripach, Olga V. Konstantinova, Bernd Schneider
Publikováno v:
Steroids. 70:551-562
A new synthesis of both epimeric forms of 26-cholestanoic acids and 26-alcohols containing a 3beta-hydroxy-Delta(5)- or a Delta(4)-3-keto-functionality in ring A is described starting from stigmasterol or (20S)-3beta-acetoxy-pregn-5-en-20-carboxylic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2fdb12194fa13b29e2bd8100de3442d
https://doi.org/10.1016/j.steroids.2005.02.014
https://doi.org/10.1016/j.steroids.2005.02.014
Autor:
Andrey P. Antonchick, Olga V. Konstantinova, Natalya B. Khripach, Vladimir A. Khripach, Bernd Schneider, Vladimir N. Zhabinskii
Publikováno v:
Steroids. 67:597-603
This paper elaborates an improved synthesis of crinosterol and campesterol starting from stigmasterol. The proposed approach is based on Claisen rearrangement of Delta23-22-allylic alcohols with various configurations of the 22-hydroxy group and geom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d9484b40e7861772ac6289fbc8335be
https://doi.org/10.1016/s0039-128x(02)00007-7
https://doi.org/10.1016/s0039-128x(02)00007-7
Autor:
Olga V. Konstantinova, Andrey P. Antonchick, Vladimir A. Khripach, Natalya B. Khripach, Vladimir N. Zhabinskii
Publikováno v:
Russian Journal of Bioorganic Chemistry. 28:257-261
The syntheses of (24S)-24,25-epoxycholesterol, (24S)-hydroxycholesterol, and 24-ketocholesterol are described. The compounds belong to oxysterols, which can be considered to be the modulators of cholesterol metabolism. The asymmetric hydroxylation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::213d91ba9829c98d7c5d204174bbd76a
https://doi.org/10.1023/a:1015720707433
https://doi.org/10.1023/a:1015720707433
Autor:
Natalya B. Khripach, M. I. Zavadskaya, Vladimir A. Khripach, V. K. Ol'khovik, O. A. Drachenova, Vladimir N. Zhabinskii
Publikováno v:
ChemInform. 28
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6337536d999ba92fee2bef590b6ec8e8
https://doi.org/10.1002/chin.199717194
https://doi.org/10.1002/chin.199717194
Publikováno v:
Tetrahedron Letters. 41:5765-5767
A new method for the preparation of a 1,4-diene system in the steroid side chain, providing the possibility of stereocontrol at C-3 has been described. Its usefulness has been examined for Δ 22,25 -24-alkyl steroid synthesis. The proposed approach i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::720e1a0a339f0224d74a0e380ebee828
https://doi.org/10.1016/s0040-4039(00)00900-x
https://doi.org/10.1016/s0040-4039(00)00900-x