1
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Kumar D, Ganesh M, Namboothiri INN. Metal-mediated reactions of bromoform with electron-rich and electron-deficient carbon-carbon and carbon-hetero atom multiple bonds. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02075-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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2
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Lu J, Zhang Y, Yang W, Guo Q, Gao L, Song Z. Transformation of the B Ring to the C Ring of Bryostatins by Csp 3-H Amination and Z to E Isomerization. Org Lett 2017; 19:5232-5235. [PMID: 28901773 DOI: 10.1021/acs.orglett.7b02510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An interesting approach to transform the B ring of bryostatins to the C ring has been developed. The key tactics of the approach feature an intramolecular Csp3-H bond amination to form spirocyclic hemiaminal, which undergoes ring opening to afford the C ring found in bryostatin 17. The subsequent epoxidation/oxidation sequence results in Z to E isomerization of the exo-cyclic enoate, delivering the common precursor, which could be transformed into the C ring found in bryostatins 1, 2, 4-9, 12, 14, and 15.
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Affiliation(s)
- Ji Lu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Yuebao Zhang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - WenYu Yang
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Qianyou Guo
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Lu Gao
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University , Chengdu 610064, P. R. China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University , Tianjin 300071, P. R. China
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3
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Gómez-Palomino A, Pellicena M, Krämer K, Romea P, Urpí F, Aullón G, Padrón JM. Total synthesis of (+)-herboxidiene/GEX 1A. Org Biomol Chem 2017; 15:1842-1862. [DOI: 10.1039/c7ob00072c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis of herboxidiene is granted from highly stereoselective aldol reactions from two lactate-derived ketones and an oxa-Michael cyclization.
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Affiliation(s)
- Alejandro Gómez-Palomino
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Miquel Pellicena
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Katrina Krämer
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Pedro Romea
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Fèlix Urpí
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Gabriel Aullón
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - José M. Padrón
- BioLab
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- Spain
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4
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Leahy JW, Brzezinski LJ. A synthetic approach to the phorboxazoles—synthesis of the exocyclic fragment. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Synthesis of the phorboxazoles—potent, architecturally novel marine natural products. J Antibiot (Tokyo) 2016; 69:220-52. [DOI: 10.1038/ja.2016.8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/14/2016] [Accepted: 01/19/2016] [Indexed: 11/08/2022]
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6
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Chatterjee B, Bera S, Mondal D. Julia–Kocienski olefination: a key reaction for the synthesis of macrolides. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2013.09.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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8
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Clarke PA, Ermanis K. Synthesis of the C20–C32 Tetrahydropyran Core of the Phorboxazoles and the C22 Epimer via a Stereodivergent Michael Reaction. Org Lett 2012; 14:5550-3. [DOI: 10.1021/ol3026523] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paul A. Clarke
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Kristaps Ermanis
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
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9
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Kuntiyong P, Lee TH, Kranemann CL, White JD. Total synthesis of the marine toxin phorboxazole A using palladium(II)-mediated intramolecular alkoxycarbonylation for tetrahydropyran synthesis. Org Biomol Chem 2012; 10:7884-99. [PMID: 22910851 DOI: 10.1039/c2ob25766a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potent antitumor agent phorboxazole A was synthesized from six subunits comprising C1-C2 (115), C3-C8 (98), C9-C19 (74), C20-C32 (52), C33-C41 (84) and C42-C46 (85). Tetrahydropyrans B and C containing cis-2,6-disubstitution were fabricated via palladium(II)-mediated intramolecular alkoxycarbonylation which, in the case of tetrahydropyran C, was carried out with catalytic palladium(II) and p-benzoquinone as the stoichiometric re-oxidant. Tetrahydropyran D was obtained by a stereoselective tin(IV)-catalyzed coupling of a C9 aldehyde with an allylsilane, and the C19-C20 connection was made using a completely stereoselective Wittig-Schlosser (E) olefination. Coupling of the oxazole C32 methyl substituent with the intact C33-C46 δ-lactone 3was accompanied by elimination of the vinyl bromide to a terminal alkyne, but the C32-C33 linkage was implemented successfully with 83 and C33-C41 lactone 84. The C42-C46 segment of the side chain was then appended via Julia-Kocienski olefination. The macrolide portion of phorboxazole A was completed by means of an Ando-Still-Gennari intramolecular (Z)-selective olefination at C2-C3 which required placement of a (dimethoxyphosphinyl)acetate moiety at C24. Final deprotection led to phorboxazole A via a route in which the longest linear sequence is 37 steps and the overall yield is 0.36%.
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Affiliation(s)
- Punlop Kuntiyong
- Department of Chemistry, Oregon State University, Corvallis, Oregon, USA
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10
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Lu J, Song Z, Zhang Y, Gan Z, Li H. Prins Cyclization of Bis(silyl) Homoallylic Alcohols to Form 2,6-cis-Tetrahydropyrans Containing a Geometrically Defined Exocyclic Vinylsilane: Efficient Synthesis of Ring B of the Bryostatins. Angew Chem Int Ed Engl 2012; 51:5367-70. [DOI: 10.1002/anie.201201323] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Indexed: 11/08/2022]
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11
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Lu J, Song Z, Zhang Y, Gan Z, Li H. Prins Cyclization of Bis(silyl) Homoallylic Alcohols to Form 2,6-cis-Tetrahydropyrans Containing a Geometrically Defined Exocyclic Vinylsilane: Efficient Synthesis of Ring B of the Bryostatins. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201323] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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12
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Fuwa H. Total Synthesis of Tetrahydropyran-Containing Natural Products Exploiting Intramolecular Oxa-Conjugate Cyclization. HETEROCYCLES 2012. [DOI: 10.3987/rev-12-730] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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14
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Fuwa H, Ichinokawa N, Noto K, Sasaki M. Stereoselective Synthesis of 2,6-Cis-Substituted Tetrahydropyrans: Brønsted Acid-Catalyzed Intramolecular Oxa-Conjugate Cyclization of α,β-Unsaturated Ester Surrogates. J Org Chem 2011; 77:2588-607. [DOI: 10.1021/jo202179s] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Haruhiko Fuwa
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Naoki Ichinokawa
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Kenkichi Noto
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Makoto Sasaki
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
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15
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Lu Y, Woo SK, Krische MJ. Total synthesis of bryostatin 7 via C-C bond-forming hydrogenation. J Am Chem Soc 2011; 133:13876-9. [PMID: 21780806 DOI: 10.1021/ja205673e] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The marine macrolide bryostatin 7 is prepared in 20 steps (longest linear sequence) and 36 total steps with five C-C bonds formed using hydrogenative methods. This approach represents the most concise synthesis of any bryostatin reported, to date.
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Affiliation(s)
- Yu Lu
- University of Texas at Austin, Department of Chemistry and Biochemistry, 78712, United States
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16
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Zang Q, Gulab S, Stocker BL, Baars S, Hoberg JO. Synthesis of an Acyclic C1-C11 Fragment of Peloruside B. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Clarke PA, Santos S, Mistry N, Burroughs L, Humphries AC. The Asymmetric Maitland−Japp Reaction and Its Application to the Construction of the C1−C19 Bis-pyran Unit of Phorboxazole B. Org Lett 2011; 13:624-7. [DOI: 10.1021/ol102860r] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul A. Clarke
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Department of Chemistry, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, Leicestershire, LE11 5RH, U.K
| | - Soraia Santos
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Department of Chemistry, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, Leicestershire, LE11 5RH, U.K
| | - Nimesh Mistry
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Department of Chemistry, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, Leicestershire, LE11 5RH, U.K
| | - Laurence Burroughs
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Department of Chemistry, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, Leicestershire, LE11 5RH, U.K
| | - Alexander C. Humphries
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Department of Chemistry, AstraZeneca R&D Charnwood, Bakewell Road, Loughborough, Leicestershire, LE11 5RH, U.K
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18
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Wang B, Hansen TM, Weyer L, Wu D, Wang T, Christmann M, Lu Y, Ying L, Engler MM, Cink RD, Lee CS, Ahmed F, Forsyth CJ. Total Synthesis of Phorboxazole A via de Novo Oxazole Formation: Convergent Total Synthesis. J Am Chem Soc 2010; 133:1506-16. [DOI: 10.1021/ja1089099] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Wang B, Hansen TM, Wang T, Wu D, Weyer L, Ying L, Engler MM, Sanville M, Leitheiser C, Christmann M, Lu Y, Chen J, Zunker N, Cink RD, Ahmed F, Lee CS, Forsyth CJ. Total Synthesis of Phorboxazole A via de Novo Oxazole Formation: Strategy and Component Assembly. J Am Chem Soc 2010; 133:1484-505. [DOI: 10.1021/ja108906e] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Synthetic studies on the phorboxazoles: a short synthesis of an epi-C23 tetrahydropyran core. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Candy M, Audran G, Bienaymé H, Bressy C, Pons JM. Enantioselective Enzymatic Desymmetrization of Highly Functionalized Meso Tetrahydropyranyl Diols. Org Lett 2009; 11:4950-3. [DOI: 10.1021/ol902107g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mathieu Candy
- Aix-Marseille Université, Institut des Sciences Moléculaires de Marseille, iSm2 CNRS UMR6263 - équipe STeRéO Campus Saint-Jérôme, 13397 Marseille Cedex 20, France
| | - Gérard Audran
- Aix-Marseille Université, Institut des Sciences Moléculaires de Marseille, iSm2 CNRS UMR6263 - équipe STeRéO Campus Saint-Jérôme, 13397 Marseille Cedex 20, France
| | - Hugues Bienaymé
- Aix-Marseille Université, Institut des Sciences Moléculaires de Marseille, iSm2 CNRS UMR6263 - équipe STeRéO Campus Saint-Jérôme, 13397 Marseille Cedex 20, France
| | - Cyril Bressy
- Aix-Marseille Université, Institut des Sciences Moléculaires de Marseille, iSm2 CNRS UMR6263 - équipe STeRéO Campus Saint-Jérôme, 13397 Marseille Cedex 20, France
| | - Jean-Marc Pons
- Aix-Marseille Université, Institut des Sciences Moléculaires de Marseille, iSm2 CNRS UMR6263 - équipe STeRéO Campus Saint-Jérôme, 13397 Marseille Cedex 20, France
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22
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Dalisay DS, Molinski TF. Structure Elucidation at the Nanomole Scale. 2. Hemi-phorboxazole A from Phorbas sp. Org Lett 2009; 11:1967-70. [DOI: 10.1021/ol9004189] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Doralyn S. Dalisay
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093
| | - Tadeusz F. Molinski
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093
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23
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24
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C. Majumdar K, Debnath P, Roy B. Metal-Catalyzed Heterocyclization: Formation of Five- and Six-Membered Oxygen Heterocycles through Carbon-Oxygen Bond Forming Reactions. HETEROCYCLES 2009. [DOI: 10.3987/rev-09-656] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Okutani M, Mori Y. Conversion of Bromoalkenes into Alkynes by Wet Tetra-n-butylammonium Fluoride. J Org Chem 2008; 74:442-4. [DOI: 10.1021/jo802101a] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaru Okutani
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Yuji Mori
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
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26
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Smith AB, Razler TM, Ciavarri JP, Hirose T, Ishikawa T, Meis RM. A Second-Generation Total Synthesis of (+)-Phorboxazole A. J Org Chem 2008; 73:1192-200. [DOI: 10.1021/jo7018152] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amos B. Smith
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Thomas M. Razler
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Jeffrey P. Ciavarri
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Tomoyasu Hirose
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Tomoyasu Ishikawa
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Regina M. Meis
- Department of Chemistry, The Penn Center for Molecular Discovery, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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27
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Henry N, Robertson MN, Marquez R. Fast and efficient synthesis of the complete LL-Z1640-2 framework. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.151] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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White JD, Lee TH, Kuntiyong P. Total Synthesis of Phorboxazole A. 2. Assembly of Subunits and Completion of the Synthesis. Org Lett 2006; 8:6043-6. [PMID: 17165925 DOI: 10.1021/ol062531j] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[Structure: see text] Subunits of phorboxazole A containing C1-C2, C3-C8, C9-C19, C20-C32, C33-C41, and C42-C46 were connected in a sequence that first linked C32 with C33 and then C41 with C42. A C3-C8 fragment was joined to C9-C19, and the assembled unit was then joined with the left half of 1. Closure of the macrolide was accomplished by esterification of the C24 alcohol followed by intramolecular Horner-Wadsworth-Emmons condensation to set the (E)-C2-C3 alkene.
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Affiliation(s)
- James D White
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
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