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Relevant bibliographies by topics / Β-unsaturated steroids

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Academic literature on the topic 'Β-unsaturated steroids'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Β-unsaturated steroids"

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Chodounská, Hana, та Vladimír Pouzar. "Preparation of 3-(6-Deoxy-β-D-glucopyranosyloxy) and 3-(6-Deoxy-α-L-mannopyranosyloxy)androstane Derivatives with Unsaturated Side Chain in Position 17β". Collection of Czechoslovak Chemical Communications 58, № 12 (1993): 3000–3008. http://dx.doi.org/10.1135/cccc19933000.

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In our previous papers we described the preparation of 3-β-D-glucopyranosyloxy) and 3-β-D-galactopyranosyloxy) derivatives of steroids with an α,β-unsaturated ester chain in position 17β of androstane skeleton. In conection with this project we have studied silver silicate promoted glycosylation of some of above mentioned steroidal derivatives with 2,3,4-tri-O-acetyl-6-deoxy-α-D-glucopyranosyl bromide and 2,3,4-tri-O-acetyl-6-deoxy-α-L-mannopyranosyl bromide.

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2

Xia, Zi-Yi, Man-Man Sun, Yang Jin, et al. "Lobosteroids A–F: Six New Highly Oxidized Steroids from the Chinese Soft Coral Lobophytum sp." Marine Drugs 21, no. 8 (2023): 457. http://dx.doi.org/10.3390/md21080457.

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To explore the steroidal constituents of the soft coral Lobophytum sp. at the coast of Xuwen County, Guangdong Province, China, a chemical investigation of the above-mentioned soft coral was carried out. After repeated column chromatography over silica gel, Sephadex LH-20, and reversed-phase HPLC, six new steroids, namely lobosteroids A–F (1–6), along with four known compounds 7–10, were obtained. Their structures were determined by extensive spectroscopic analysis and comparison with the spectral data reported in the literature. Among them, the absolute configuration of 1 was determined by X-

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3

Parish, Edward J., Huaizhong Li та Shengrong Li. "Facile β-Epoxidation of Unsaturated Steroids with Permanganateion". Synthetic Communications 25, № 6 (1995): 927–40. http://dx.doi.org/10.1080/00397919508013431.

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Dénès, Fabrice, Julien Farard, and Jacques Lebreton. "Synthesis of 13C-Labeled Steroids." Synthesis 51, no. 23 (2019): 4311–37. http://dx.doi.org/10.1055/s-0037-1611914.

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Due to the wide spectrum of biological activities of steroids, the detection and quantification of steroidal residues in various biological materials are crucial for drug development, doping prevention, and environmental protection. In addition, the analytical technique of stable isotopic dilution (SID) by Liquid Chromatography-Mass Spectrometry (LC-MS) requires 13C-labeled steroids as standards to provide accurate and reproducible steroid quantification. In this context, the synthesis of 13C-labeled steroids is reviewed. The approaches based on partial synthesis starting from commercially ava

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Živković, Marijana B., Irena T. Novaković, Ivana Z. Matić, Dušan Sladić та Natalija M. Krstić. "Synthesis and preliminary screening for the biological activity of some steroidal Δ 4 -unsaturated semicarbazone derivatives". Steroids 148 (20 квітня 2019): 36–46. https://doi.org/10.1016/j.steroids.2019.04.010.

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Eleven new steroidal mono- and bis(semicarbazones)2a–e, 4d and 3a–e have been prepared starting from various 3-oxo-α,β-unsaturated steroids. Mono-semicarbazones 2a–e were further subjected to ethyl chloroacetate in boiling absolute ethanol but, instead of expected intramolecular cyclocondensation reaction products, the new carbazate esters 5a-e were obtained. The structures of all synthesized compounds and identification of each E/Z isomer were deduced by elemental analysis, HRMS, NMR, and IR spectroscopy. Preliminary screening for the cytotoxic activity in vitro o

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Mesa, Dayana, Yarelys E. Augusto, Giselle Hernández та ін. "The Synthesis of Novel aza-Steroids and α, β-Unsaturated-Cyanoketone from Diosgenin". Molecules 28, № 21 (2023): 7283. http://dx.doi.org/10.3390/molecules28217283.

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Recent studies have demonstrated the antiproliferative and cytotoxic effects of aza-steroids and steroidal sapogenins on human cancer cell lines. The scientific community has shown a growing interest in these compounds as drug candidates for cancer treatment. In the current work, we report the synthesis of new diosgenin oxime derivatives as potential antiproliferative agents. From (25 R)-5α-spirost-3,5,6-triol (1), a diosgenin derivative, ketones 2, 3, 4, and 9 were obtained and used as precursors of the new oximes. A condensation reaction was carried out between the steroidal ketones (2, 3, 4

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7

Grześ, Paweł A., Bonifacio Monti, Natalia Wawrusiewicz-Kurylonek, et al. "Simple Zn-Mediated Seleno- and Thio-Functionalization of Steroids at C-1 Position." International Journal of Molecular Sciences 23, no. 6 (2022): 3022. http://dx.doi.org/10.3390/ijms23063022.

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Here we report the reaction in the biphasic system of the in situ prepared selenols and thiols with 1,4-androstadiene-3,17-dione (1) or prednisone acetate (2) having α,β-unsaturated ketone as an electrophilic functionalization. The Michael-type addition reaction resulted to be chemo- and stereoselective, affording a series of novel steroidal selenides and sulfides. This is an example of a one-step, eco-friendly process that bypasses some of the main concerns connected with the bad smell and the toxicity of these seleno- and thio-reagents. Furthermore, we demonstrated that the proposed methodol

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Cortés-Percino, Alejandra, José Luis Vega-Báez, Anabel Romero-López, et al. "Synthesis and Evaluation of Pyrimidine Steroids as Antiproliferative Agents." Molecules 24, no. 20 (2019): 3676. http://dx.doi.org/10.3390/molecules24203676.

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A small and focused library of steroidal non-fused and fused pyrimidines was prepared from pregnenolone acetate and diosgenin, respectively. The key step was the cycloaddition reaction of nitrogen-containing 1,3-binucleophiles with the steroidal α,β-unsaturated ketone. Urea, thiourea and guanidine reacted in a similar manner and afforded the steroidal pyrimidines in good yields. The antiproliferative tests against human tumor cell lines gave GI50 values in the micromolar range and had no effect on healthy fibroblasts. Additional experiments indicated that the compounds did not act as P-glycopr

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Tavarès, Manuella, René Ramasseul, Jean-Claude Marchon, Bernard Bachet, Claude Brassy та Jean-Paul Mornon. "Catalytic β-stereospecific epoxidation of unsaturated steroids by trans-dioxoruthenium(VI)tetramesitylporphyrin. Stereochemical grounds for the β-diastereofacial selection". J. Chem. Soc., Perkin Trans. 2, № 8 (1992): 1321–29. http://dx.doi.org/10.1039/p29920001321.

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Salvador, J. A. R., M. L. Sáe Melo та A. S. Campos Neves. "Oxidations with potassium permanganate — metal sulphates and nitrates. β-Selective epoxidation of Δ5-unsaturated steroids". Tetrahedron Letters 37, № 5 (1996): 687–90. http://dx.doi.org/10.1016/0040-4039(95)02243-0.

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Dissertations / Theses on the topic "Β-unsaturated steroids"

1

Wu, Yao-Ting. "β-Aminosubstituted α,β-Unsaturated Fischer Carbene Complexes as Precursors for Complex Oligocyclic Molecules - Basics and Applications". Doctoral thesis, 2003. http://hdl.handle.net/11858/00-1735-0000-0006-B61B-7.

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Book chapters on the topic "Β-unsaturated steroids"

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Barton, Derek H. R., John Lister-James, Robert H. Hesse, Maurice M. Pechet, and Shlomo Rozen. "Electrophilic Fluorination of Some Steroidal α,β-Unsaturated Ketones." In World Scientific Series in 20th Century Chemistry. WORLD SCIENTIFIC / IMPERIAL COLLEGE PRESS, 1996. http://dx.doi.org/10.1142/9789812795984_0069.

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Taber, Douglass F. "Organocatalyzed C–C Ring Construction: The Jørgenson Synthesis of (+)-Estrone." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0070.

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Ana Maria Faísca Phillips and Maria Teresa Barros of the Universidade Nova de Lisboa added (Eur. J. Org. Chem. 2014, 152) the bromo ester 1 to cinnamaldehyde 2 to give the cyclopropyl phosphonate 3 in high ee. Mukund P. Sibi and Jayaraman Sivaguru of North Dakota State University used (Angew. Chem. Int. Ed. 2014, 53, 5604) an organocatalyst to mediate the 2+2 photocycloaddition of 4, leading to 5. Shu-Li You of the Shanghai Institute of Organic Chemistry expanded (Org. Lett. 2014, 16, 1810) the four-membered ring of 6 to create the cyclopentanone 7 in high ee. Damien Bonne and Jean Rodriguez o

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