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MacDonald E, Blencowe P, Baker J, Bennett C, Boyd S, Fowler K, Rigoreau L, Stanway E, Watson M, Mao H, Gao H, Zhao C, Zhang F, Abas H. Scalable Synthesis of an Acid Stable Analogue of Hippuristanol. Org Lett 2024; 26:7043-7048. [PMID: 39120960 DOI: 10.1021/acs.orglett.4c02615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2024]
Abstract
Hippuristanol is a marine derived steroidal natural product with promising anticancer activity. However, instability at low pH has precluded its development as an efficient therapy. We addressed this limitation by replacing one of the oxygen atoms of the spiroketal moiety with a carbon atom. Key steps in the synthesis include a Meyer-Schuster/Nazarov cascade, a hypoiodite mediated oxyfunctionalization, and the late-stage installation of a hydroxyl group on the C-ring of the steroid.
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Affiliation(s)
- Ellen MacDonald
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Peter Blencowe
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Jennifer Baker
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Charlotte Bennett
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Susan Boyd
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Katherine Fowler
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Laurent Rigoreau
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Emma Stanway
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Morag Watson
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
| | - Haibin Mao
- Pharmaron Ningbo Campus, No. 800 Bin-Hai fourth Road, Hangzhou Bay New Zone, Ningbo 315336, China
| | - Hongjie Gao
- Pharmaron Ningbo Campus, No. 800 Bin-Hai fourth Road, Hangzhou Bay New Zone, Ningbo 315336, China
| | - Chengjun Zhao
- Pharmaron Ningbo Campus, No. 800 Bin-Hai fourth Road, Hangzhou Bay New Zone, Ningbo 315336, China
| | - Fan Zhang
- Pharmaron Ningbo Campus, No. 800 Bin-Hai fourth Road, Hangzhou Bay New Zone, Ningbo 315336, China
| | - Hossay Abas
- Cancer Research Horizons, Babraham Research Campus, Cambridge CB22 3AT, U.K
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2
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Thomas K, Khymenets O, Pozo Ó, McLeod MD. Synthesis of 3α,6β‐Dihydroxyandrostan‐17‐one 3‐Glucuronides for the Detection of Testosterone Misuse. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Komba Thomas
- ANU: Australian National University Research School of Chemistry Building 137, Linnaeus WayActon 2601 Canberra AUSTRALIA
| | - Olha Khymenets
- Institut Hospital del Mar d'Investigacions Mèdiques: Institut Hospital del Mar d'Investigacions Mediques Applied Metabolomics Research Group Doctor Aiguader, 8808003 Barcelona 08003 Barcelona SPAIN
| | - Óscar Pozo
- IMIM: Institut Hospital del Mar d'Investigacions Mediques Applied Metabolomics Research Group Doctor Aiguader, 8808003 Barcelona 08003 Barcelona SPAIN
| | - Malcolm Donald McLeod
- ANU: Australian National University Research School of Chemistry Building 137, Linnaeus WayActon 2601 Canberra AUSTRALIA
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3
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Novel d-Annulated Pentacyclic Steroids: Regioselective Synthesis and Biological Evaluation in Breast Cancer Cells. Molecules 2020; 25:molecules25153499. [PMID: 32752019 PMCID: PMC7435891 DOI: 10.3390/molecules25153499] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 12/19/2022] Open
Abstract
The acid-catalyzed cyclization of benzylidenes based on 16-dehydropregnenolone acetate (16-DPA) was studied. It was found that these compounds readily undergo regioselective interrupted Nazarov cyclization with trapping chloride ion and an efficient method of the synthesis of d-annulated pentacyclic steroids based on this reaction was proposed. The structures of the synthesized pentacyclic steroids were determined by NMR and X-ray diffraction. It was found that the reaction affords a single diastereomer, but the latter can crystallize as two conformers depending on the structure. Antiproliferative activity of synthesized compounds was evaluated against two breast cancer cell lines: MCF-7 and MDA-MB-231. All tested compounds showed relatively high antiproliferative activity. The synthetic potential of the protocol developed was illustrated by the gram-scale experiment.
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Affiliation(s)
- Norbert Hoffmann
- CNRS, Université de Reims Champagne-Ardenne; ICMR, Equipe de Photochimie; UFR Sciences, B.P. 1039 51687 Reims France
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5
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Truong P, Shanahan CS, Doyle MP. Divergent stereocontrol of acid catalyzed intramolecular aldol reactions of 2,3,7-triketoesters: synthesis of highly functionalized cyclopentanones. Org Lett 2012; 14:3608-11. [PMID: 22738671 PMCID: PMC3480983 DOI: 10.1021/ol301317a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The intramolecular acid catalyzed aldol cyclization of 2,3,7-triketoesters formed from ζ-keto-α-diazo-β-ketoesters provides highly functionalized cyclopentanones with good diastereoselectivity in high overall yields via kinetically controlled and stereodivergent catalytic processes. Lewis acid catalysis gives high selectivity for the 1,2-anti tetrasubstituted cyclopentanones, whereas Brønsted acid catalysis produces the corresponding 1,2-syn diastereomer.
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Affiliation(s)
- Phong Truong
- Department of Chemistry & Biochemistry, University of Maryland, College Park, MD 20742
| | - Charles S. Shanahan
- Department of Chemistry & Biochemistry, University of Maryland, College Park, MD 20742
| | - Michael P. Doyle
- Department of Chemistry & Biochemistry, University of Maryland, College Park, MD 20742
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Akhrem IS, Avetisyan DV, Afanas’eva LV, Orlinkov AV, Kagramanov ND, Petrovskii PV. Superelectrophilic sp3 C–H carbonylation of n-octyl acetate as a way to new bifunctional neo-octanes. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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8
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O'Brien EM, Li J, Carroll PJ, Kozlowski MC. Synthesis of the cores of hypocrellin and shiraiachrome: diastereoselective 1,8-diketone aldol cyclization. J Org Chem 2010; 75:69-73. [PMID: 19894740 DOI: 10.1021/jo9018914] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intramolecular 1,8-diketone aldol reactions were studied as a tool for the construction of the seven-membered rings of hypocrellin and shiraiachrome. Conditions were identified to obtain the relative stereochemistries present in the two natural products with excellent diastereoselectivity. In addition, a nine-membered ring congener, which has yet to be observed in nature, formed with high selectivity when a hindered amine was used in conjunction with silazide bases.
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Affiliation(s)
- Erin M O'Brien
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Swamy KCK, Kumar NNB, Balaraman E, Kumar KVPP. Mitsunobu and Related Reactions: Advances and Applications. Chem Rev 2009; 109:2551-651. [PMID: 19382806 DOI: 10.1021/cr800278z] [Citation(s) in RCA: 873] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - E. Balaraman
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
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10
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Nakamura A, Kaji Y, Saida K, Ito M, Nagatoshi Y, Hara N, Fujimoto Y. Synthesis of xestobergsterol A from dehydroepiandrosterone. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.07.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Jung ME, Johnson TW. First total synthesis of xestobergsterol A and active structural analogues of the xestobergsterols. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(00)01086-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Cui J, Zeng L, Su J, Lu W. Synthesis of polyhydroxysterols (I): synthesis of 24-methylenecholest-4-en-3beta,6beta-diol, a cytotoxic natural hydroxylated sterol. Steroids 2001; 66:33-8. [PMID: 11090656 DOI: 10.1016/s0039-128x(00)00132-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Starting from stigmasterol (2), 24-methylenecholest-4-en-3beta, 6beta-diol (1), a cytotoxic natural dihydroxylated sterol, was synthesized via 10 steps in 20% overall yield. The introduction of a side-chain of sterol was achieved by solid-liquid phase-transfer Wittig reaction using (3-methyl-2-oxo)butyltriphenylarsonium bromide (12) and K(2)CO(3). Construction of the steroidal nucleus was finished by the addition of 3beta-acetoxycholest-5,6-en-24-one (7) with NBA in dioxane under ambient temperature and by the elimination of 3beta, 6beta-diacetoxy-5a-bromocholestane-24-one (9). The spectral data of the synthetic product (1) are completely consistent with those of the natural compound (1).
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Affiliation(s)
- J Cui
- Department of Chemistry, Zhongshan University, 510275, P.R. of, Guangzhou, China.
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Unusual Diastereoselectivity in Intramolecular Diels-Alder Reactions of Substituted 3,5-Hexadienyl Acrylates. Preference for a Boatlike Structure of the Six-Atom Tether Due to Ester Overlap. Org Lett 2000; 2:1835-1837. [PMID: 10891170 DOI: 10.1021/ol000104e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermolysis of the 3,5-hexadienyl acrylates (a) proceeds via the transition state E in which the connecting chain adopts a boatlike conformation due to a preference for maintaining ester overlap to afford the products b with good diastereoselectivity.
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14
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Izzo I, Meduri G, Avallone E, De Riccardis F, Sodano G. Studies Towards the Synthesis of Aplykurodins - Synthesis of 17,18-Dihydro-3,9-di-epi-aplykurodinone B. European J Org Chem 2000. [DOI: 10.1002/(sici)1099-0690(200002)2000:3<439::aid-ejoc439>3.0.co;2-f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Jung ME, Johnson TW. First total synthesis of xestobergsterol A and active structural analogues of the xestobergsterols. Org Lett 1999; 1:1671-4. [PMID: 10836028 DOI: 10.1021/ol991057x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[formula: see text] A novel pentacyclic polyhydroxylated sterol, xestobergsterol A (1a), has been synthesized in 24 steps and in good overall yield from stigmasterol 17. The key steps of the synthesis are the Breslow remote functionalization of the polyoxygenated steroid derived from 25 and the base-catalyzed epimerization-aldol condensation of the dione derived from 27.
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Affiliation(s)
- M E Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles 90095-1569, USA.
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Jung ME, Johnson TW. Unusual Cyclization Products Derived from Photolysis of Breslow's Steroidal Benzophenone Esters. J Org Chem 1999. [DOI: 10.1021/jo990800w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael E. Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90085-1569
| | - Ted W. Johnson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90085-1569
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17
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An approach to the synthesis of CP-263,114: complementary routes to the bicyclic ring system via two kinds of fragmentation reaction. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00941-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Krafft ME, Dasse OA, Fu Z. Synthesis of the C/D/E and A/B Rings of Xestobergsterol-(A). J Org Chem 1999. [DOI: 10.1021/jo982319w] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. E. Krafft
- Department of Chemistry, Florida State University, Tallahassee, Florida 32306-4390
| | - O. A. Dasse
- Department of Chemistry, Florida State University, Tallahassee, Florida 32306-4390
| | - Z. Fu
- Department of Chemistry, Florida State University, Tallahassee, Florida 32306-4390
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