Relevant bibliographies by topics / Stereochemistry. Steroids

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Stereochemistry. Steroids'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Stereochemistry. Steroids"

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Al-Fouti, Khaled, and James R. Hanson. "The Hydroboration of Some Steroidal Hydroxymethylene Derivatives." Journal of Chemical Research 2003, no. 1 (2003): 6–7. http://dx.doi.org/10.3184/030823403103172931.

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The regio- and stereochemistry of the hydroboration of some methoxymethylene steroids and hydroxymethylene (β-formyl) steroidal ketones and the oxidation of the adducts to form the corresponding hydroxymethyl steroids, are described.
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WINTERFELDT, E. "ChemInform Abstract: Steroids and Stereochemistry." ChemInform 25, no. 40 (2010): no. http://dx.doi.org/10.1002/chin.199440272.

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Kicha, Alla A., Anatoly I. Kalinovsky, Alexander S. Antonov, et al. "Determination of C-23 Configuration in (20R)-23-Hydroxycholestane Side Chain of Steroid Compounds by 1H and 13C NMR Spectroscopy." Natural Product Communications 8, no. 9 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800908.

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Epimeric (20 R,23 R)- and (20 R,23 S)-23-hydroxycholestane steroids were synthesized. Their structures were elucidated by extensive 1H and 13C NMR spectroscopy and application of the Mosher's method. All proton and carbon signals of the side chains were assigned. Based on these assignments spectral data allow the determination of the C-23 stereochemistry of (20 R)-23-hydroxycholestane side chains of the new natural steroids by comparison with spectra of the obtained model compounds. As a result, the C-23 configuration of two steroid compounds from the starfishes Lethasterias nanimensis chelife
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Ermolovich, Yu V., V. N. Zhabinskii, and V. A. Khripach. "Formation of the steroidal C-25 chiral center via the asymmetric alkylation methodology." Organic & Biomolecular Chemistry 13, no. 3 (2015): 776–82. http://dx.doi.org/10.1039/c4ob02123a.

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A novel approach for the preparation of steroids containing a chiral center at C-25 is reported. The key stereochemistry inducing step was asymmetric alkylation of pseudoephenamine amides of steroidal C-26 acids. The developed methodology was successfully applied to the synthesis of (25R)- and (25S)-cholestenoic acids as well as (25R)- and (25S)-26-hydroxy brassinolides.
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Paryzek, Zdzislaw, and Krzysztof Blaszczyk. "Spiro steroids via the Barbier–Grignard reaction of steroidal ketones with allyl bromide and magnesium." Canadian Journal of Chemistry 65, no. 1 (1987): 229–33. http://dx.doi.org/10.1139/v87-037.

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Barbier–Grignard reaction of 3- and 17-steroidal ketones gave excellent yields of the allyl steroids 1 + 2 and 15. These were transformed into a mixture of 1,3- and 1,4-diols by hydroboration–oxidation. The diols 3,5, and 18 were used for the preparation of spirolactones and spiroethers. Thus, the Barbier–Grignard allylation–hydroboration–cyclization sequence proved to be an effective method for the spiroannelation of steroidal ketones. It was also shown that an earlier assignment of the stereochemistry of the diols 3 and 5 was erroneous.
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Kolekar, Supriya Murarji, B. U. Jain, and M. S. Kondawarkar. "A Review on Steroids and Terpenoids (Stereochemistry, Structural Elucidation, Isolation of Steroids and Terpenoids)." Research Journal of Pharmaceutical Dosage Forms and Technology 11, no. 2 (2019): 126. http://dx.doi.org/10.5958/0975-4377.2019.00020.x.

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Zaretskii, Z. V. I., J. M. Curtis, D. Ghosh, and A. G. Brenton. "Mass spectrometry of metastable ions and stereochemistry of steroids." International Journal of Mass Spectrometry and Ion Processes 86 (December 1988): 121–36. http://dx.doi.org/10.1016/0168-1176(88)80059-4.

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Mander, Lewis N. "Charles William Shoppee. 4 February 1904 – 20 October 1994." Biographical Memoirs of Fellows of the Royal Society 49 (January 2003): 495–507. http://dx.doi.org/10.1098/rsbm.2003.0029.

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Charles Shoppee was a major figure in research into the steroid family of organic compounds. After an extensive grounding in mechanistic organic chemistry with such major figures as Sir Jocelyn Thorpe FRS at Imperial College and Sir Christopher Ingold FRS at the University of Leeds, Shoppee spent the war years in Basel working with Tadeus Reichstein (ForMemRS 1952). There he began to apply reaction mechanistic concepts to the reactions of natural products, particularly steroids, in which he was in the vanguard of a huge and widespread activity prompted, in part, by the pharmaceutical industry'
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Huszcza, Ewa, Jadwiga Dmochowska-Gładysz, and Agnieszka Bartmańska. "Transformations of Steroids by Beauveria bassiana." Zeitschrift für Naturforschung C 60, no. 1-2 (2005): 103–8. http://dx.doi.org/10.1515/znc-2005-1-219.

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The course of transformations of testosterone and its derivatives, including compounds with an additional C1,C2 double bond and/or a 17α-methyl group, a 17β-acetyl group or without a 19-methyl group, by a Beauveria bassiana culture was investigated. The fungi promoted hydroxylation of these compounds at position 11α, oxidation of the 17β-hydroxyl group, reduction of the C1,C2 or C4,C5 double bonds and degradation of the progesterone side-chain, leading to testosterone. The structure of 4-ene-3-oxo-steroids had no influence on regio- and stereochemistry of hydroxylation. In a similar manner, de
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Zaretskii, Z. V. I., D. Ghosh, A. G. Brenton, and J. H. Beynon. "Translational energy release and stereochemistry of steroids. 14. Epimeric dihydroxy steroids of the androstane series." Rapid Communications in Mass Spectrometry 3, no. 10 (1989): 329–34. http://dx.doi.org/10.1002/rcm.1290031002.

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Dissertations / Theses on the topic "Stereochemistry. Steroids"

1

Truneh, A. "The stereochemistry of some rearrangement reactions of steroids." Thesis, University of Sussex, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382483.

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Friesen, Anne M. "Studies in the chemistry of medicinally active steroids : potential aromatase inhibitors and stereochemistry of ketone reduction." 1991. http://hdl.handle.net/1993/18276.

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Marat, Ronald Kirk. "The application of modern NMR techniques to problems of structure, stereochemistry and conformation in steroids : C-20 stereochemistry and C-17 side-chain conformation in C-20 substituted pregnanes ; structure and conformation in ring A and ring B cyclosteroids and cyclopropanosteroids." 1996. http://hdl.handle.net/1993/19206.

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Book chapters on the topic "Stereochemistry. Steroids"

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Winterfeldt, E. "Steroids and Stereochemistry." In Stereoselective Synthesis. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78496-5_1.

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Buckingham, J., and R. A. Hill. "Terpenes (Including Steroids)." In Atlas of Stereochemistry. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-3420-8_3.

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Duax, W. L., C. M. Weeks, and D. C. Rohrer. "Crystal Structures of Steroids." In Topics in Stereochemistry. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470147184.ch5.

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Klyne, W. "Some Aspects of the Stereochemistry of C-20." In Ciba Foundation Symposium - Synthesis and Metabolism of Adrenocortical Steroids (Colloquia on Endocrinology, Vol. 7). John Wiley & Sons, Ltd, 2008. http://dx.doi.org/10.1002/9780470718865.ch11.

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Bianchi, Thomas S., and Elizabeth A. Canuel. "Isoprenoid Lipids: Steroids, Hopanoids, and Triterpenoids." In Chemical Biomarkers in Aquatic Ecosystems. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691134147.003.0009.

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This chapter discusses several classes of cyclic isoprenoids and their respective derivatives, which have proven to be important biomarkers that can be used to estimate algal and vascular plant contributions as well as diagenetic proxies. Sterols are a group of cyclic alcohols (typically between C<sub>26</sub> and C<sub>30</sub>) that vary structurally in the number, stereochemistry, and position of double bonds as well as methyland ethyl-group substitutions on the side chain. Sterols are biosynthesized from isoprene units using the mevalonate pathway and are classified as triterpenes (i.e., consisting of six isoprene units). Marine organisms such as phytoplankton and zooplankton tend to be dominated by C<sub>27</sub> and C<sub>28</sub> sterols, while vascular plants have been shown to have a relatively high abundance of C<sub>29</sub> sterols. The chapter shows that although C<sub>29</sub> sterols are considered to be the dominant sterols found in vascular plants, these compounds may be present in certain epibenthic cyanobacteria and phytoplanktonic species, indicating that these compounds represent a very diverse and powerful suite of chemical biomarkers in aquatic ecosystems.
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BARTON, D. H. R., C. J. W. BROOKS, and P. DE MAYO. "Steroidal Alkaloids.: Part III. The Constitution and Stereochemistry of Cevine." In World Scientific Series in 20th Century Chemistry. WORLD SCIENTIFIC / IMPERIAL COLLEGE PRESS, 1996. http://dx.doi.org/10.1142/9789812795984_0017.

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