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Cheng J, Li YH, Huang J, Yang Z. Total Syntheses of Vicinal Dichloride Monoterpenes Enabled by Aza-Belluš-Claisen Rearrangement. Org Lett 2021; 23:8465-8470. [PMID: 34652926 DOI: 10.1021/acs.orglett.1c03187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diastereoselective syntheses of syn- and anti-vicinal dihalides were achieved via an aza-Belluš-Claisen rearrangement, which involved the reaction of an α-chloro carboxylic acid chloride with halogen-substituted trans-allyl morpholines in the presence of Lewis acids. The developed method was used for the total synthesis of a group of monoterpene natural products bearing vicinal dichloride subunits.
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Affiliation(s)
- Jiangqun Cheng
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yuan-He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking University, Beijing 100871, China
| | - Jun Huang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China.,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking University, Beijing 100871, China
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2
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Ene reactions of pre-aromatic heterocycles – Oxazoles. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Bächle F, Siemens N, Ziegler T. Glycoconjugated Phthalocyanines as Photosensitizers for PDT – Overcoming Aggregation in Solution. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901224] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Felix Bächle
- Institute of Organic Chemistry University of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Nikolai Siemens
- Department of Molecular Genetics and Infection Biology University of Greifswald Felix‐Hausdorff‐Str. 8 17487 Greifswald Germany
| | - Thomas Ziegler
- Institute of Organic Chemistry University of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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4
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Formal synthesis of Cladospolide C & epi-Cladospolide C using R-(+)-γ-valerolactone as a chiral synthon. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Heravi MM, Mohammadkhani L. Recent applications of Stille reaction in total synthesis of natural products: An update. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.05.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Satyanarayana V, Chaithanya Kumar G, Muralikrishna K, Singh Yadav J. Stereoselective synthesis of C12–C21 common fragment of thermolides 1–5. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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7
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Aljahdali AZ, Foster KA, O'Doherty GA. The asymmetric syntheses of cryptocaryols A and B. Chem Commun (Camb) 2018; 54:3428-3435. [PMID: 29547218 DOI: 10.1039/c8cc00482j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The recent total syntheses of cryptocaryols A and B are reviewed. These efforts include the correction of the initially assigned absolute and relative stereochemistry of this class of natural products. In addition to enabling the initial structure activity relationships for this class of natural products, these syntheses demonstrated the practical utility of several novel synthetic approaches.
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8
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Satyanarayana V, Kumar AS, Muralikrishna K, Kumar GC, Kumar R S, Kumar CS, Yadav JS. Studies towards the Synthesis of Lepranthin. ChemistrySelect 2018. [DOI: 10.1002/slct.201702982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Alleni Suman Kumar
- Center for Semiochemicals; CSIR- Indian Institute of Chemical Technology; Hyderabad− 500007 India
| | - Katta Muralikrishna
- Center for Semiochemicals; CSIR- Indian Institute of Chemical Technology; Hyderabad− 500007 India
| | | | - Sudheer Kumar R
- Center for Semiochemicals; CSIR- Indian Institute of Chemical Technology; Hyderabad− 500007 India
| | | | - Jhillu S. Yadav
- Center for Semiochemicals; CSIR- Indian Institute of Chemical Technology; Hyderabad− 500007 India
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9
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Affiliation(s)
- Luiz C. Dias
- Institute of Chemistry, University of Campinas, C.P. 6154, Campinas, SP 13083-970, Brazil
| | - Emilio C. de Lucca
- Institute of Chemistry, University of Campinas, C.P. 6154, Campinas, SP 13083-970, Brazil
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10
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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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11
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Dias LC, de Lucca EC. Total Synthesis of the Oxopolyene Macrolide (−)-Marinisporolide C. Org Lett 2015; 17:6278-81. [DOI: 10.1021/acs.orglett.5b03352] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luiz C. Dias
- Institute of Chemistry, University of Campinas, 13083-970, C.P. 6154, Campinas, SP, Brasil
| | - Emílio C. de Lucca
- Institute of Chemistry, University of Campinas, 13083-970, C.P. 6154, Campinas, SP, Brasil
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12
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Willwacher J, Heggen B, Wirtz C, Thiel W, Fürstner A. Total Synthesis, Stereochemical Revision, and Biological Reassessment of Mandelalide A: Chemical Mimicry of Intrafamily Relationships. Chemistry 2015; 21:10416-30. [PMID: 26094957 DOI: 10.1002/chem.201501491] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Indexed: 11/06/2022]
Abstract
Mandelalide A and three congeners had recently been isolated as the supposedly highly cytotoxic principles of an ascidian collected off the South African coastline. Since these compounds are hardly available from the natural source, a concise synthesis route was developed, targeting structure 1 as the purported representation of mandelalide A. The sequence involves an iridium-catalyzed two-directional Krische allylation and a cobalt-catalyzed carbonylative epoxide opening as entry points for the preparation of the major building blocks. The final stages feature the first implementation of terminal acetylene metathesis into natural product total synthesis, which is remarkable in that this class of substrates had been beyond the reach of alkyne metathesis for decades. Synthetic 1, however, proved not to be identical with the natural product. In an attempt to clarify this issue, NMR spectra were simulated for 20 conceivable diastereomers by using DFT followed by DP4 analysis; however, this did not provide a reliable assignment either. The puzzle was ultimately solved by the preparation of three diastereomers, of which compound 6 proved identical with mandelalide A in all analytical and spectroscopic regards. As the entire "northern sector" about the tetrahydrofuran ring in 6 shows the opposite configuration of what had originally been assigned, it is highly likely that the stereostructures of the sister compounds mandelalides B-D must be corrected analogously; we propose that these natural products are accurately represented by structures 68-70. In an attempt to prove this reassignment, an entry into mandelalides C and D was sought by subjecting an advanced intermediate of the synthesis of 6 to a largely unprecedented intramolecular Morita-Baylis-Hillman reaction, which furnished the γ-lactone derivative 74 as a mixture of diastereomers. Whereas (24R)-74 was amenable to a hydroxyl-directed dihydroxylation by using OsO4 /TMEDA as the reagent, the sister compound (24S)-74 did not follow a directed path but simply obeyed Kishi's rule; only this unexpected escape precluded the preparation of mandelalides C and D by this route. A combined spectroscopic and computational (DFT) study showed that the reasons for this strikingly different behavior of the two diastereomers of 74 are rooted in their conformational peculiarities. This aspect apart, our results show that the OsO4 /TMEDA complex reacts preferentially with electron deficient double bonds even if other alkenes are present that are more electron rich and less encumbered. Finally, in a brief biological survey authentic mandelalide A (6) was found to exhibit appreciable cytotoxicity only against one out of three tested human cancer cell lines and all synthetic congeners were hardly active. No significant fungicidal properties were observed.
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Affiliation(s)
- Jens Willwacher
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Berit Heggen
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Conny Wirtz
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany).
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13
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14
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Walleser P, Brückner R. Enantioselective Synthesis of (+)-Obolactone Based on a Symmetry-Breaking Wacker Monooxidation of a Diene. Org Lett 2013; 15:1294-7. [DOI: 10.1021/ol400232m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Patrick Walleser
- Institut für Organische Chemie, Albert-Ludwigs-Universität, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
| | - Reinhard Brückner
- Institut für Organische Chemie, Albert-Ludwigs-Universität, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
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15
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Dias LC, Kuroishi PK, Polo EC, de Lucca EC. Enantioselective total synthesis of (−)-ericanone. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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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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17
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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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18
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19
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20
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21
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Barnych B, Vatèle JM. Total Synthesis of seco-Plakortolide E and (−)-ent-Plakortolide I: Absolute Configurational Revision of Natural Plakortolide I. Org Lett 2011; 14:564-7. [DOI: 10.1021/ol203185f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bogdan Barnych
- Université Lyon1, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS), UMS 5246 CNRS, équipe SURCOOF, bât Raulin, 43 bd du 11 Novembre 1918, Villeurbanne Cedex, France
| | - Jean-Michel Vatèle
- Université Lyon1, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS), UMS 5246 CNRS, équipe SURCOOF, bât Raulin, 43 bd du 11 Novembre 1918, Villeurbanne Cedex, France
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22
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Smith AB, Hogan AML, Liu Z, Razler TM, Meis RM, Morinaka BI, Molinski TF. Phorboxazole Synthetic Studies: Design, Synthesis and Biological Evaluation of Phorboxazole A and Hemi-Phorboxazole A Related Analogues. Tetrahedron 2011; 67:5069-5078. [PMID: 21811346 PMCID: PMC3146768 DOI: 10.1016/j.tet.2010.12.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The design, synthesis and biological evaluation of a new phorboxazole analogue, comprising an acetal replacement for the C-ring tetrahdropyran of the natural product and carrying a potency-enhancing C(45-46) vinyl chloride side chain, is described. In addition, the synthesis of (+)-hemi-phorboxazole A and a series of related hemi-phorboxazole A analogues has been achieved. The new acetal ring replacement analogue displayed activity comparable to that of the parent natural product against HCT-116 (colon) cells (IC(50) 2.25 ng/mL). Equally important, the phorboxazole analogue and two related hemiphorboxazole A congeners exhibited significant antifungal activity when assayed against pathogenic Candida albicans strains.
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Affiliation(s)
- Amos B. Smith
- Department of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Anne-Marie L. Hogan
- Department of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Zhuqing Liu
- Department of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Thomas M. Razler
- Department of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Regina M. Meis
- Department of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Brandon I. Morinaka
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093
| | - Tadeusz F. Molinski
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093
- 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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A new strategy for the synthesis of substituted dihydropyrones and tetrahydropyrones via palladium-catalyzed coupling of thioesters. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.114] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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A one-pot procedure for methylenating carbonyl compounds using the Nysted reagent and titanocene dichloride. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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25
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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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26
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Nicolaou KC, Jiang X, Lindsay-Scott PJ, Corbu A, Yamashiro S, Bacconi A, Fowler VM. Total synthesis and biological evaluation of monorhizopodin and 16-epi-monorhizopodin. Angew Chem Int Ed Engl 2011; 50:1139-44. [PMID: 21268213 DOI: 10.1002/anie.201006780] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Indexed: 12/31/2022]
Affiliation(s)
- K C Nicolaou
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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27
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Nicolaou KC, Jiang X, Lindsay-Scott PJ, Corbu A, Yamashiro S, Bacconi A, Fowler VM. Total Synthesis and Biological Evaluation of Monorhizopodin and 16-epi-Monorhizopodin. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006780] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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28
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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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29
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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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30
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Flowers CL, Vogel P. Short diastereoselective synthesis of the C1-C13 (AB spiroacetal) and C17-C28 fragments (CD spiroacetal) of spongistatin 1 and 2 through double chain-elongation reactions. Chemistry 2010; 16:14074-82. [PMID: 20963739 DOI: 10.1002/chem.201002204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A unique and practical synthetic sequence for rapid access to polyketides and to further the spiroacetals derived from them, which utilizes a bidirectional Hosomi-Sakurai allylation approach around key allylsilanes in the synthesis of the AB and CD ring systems of spongistatin 1 and 2, is reported. The synthesis of the AB spiroacetal 9 requires 13 steps, with a longest linear sequence of seven steps in an overall yield of 27%. The synthesis of the CD spiroacetal 13 requires 15 steps, with a longest linear sequence of 11 steps in an overall yield of 30%. Both syntheses start from but-3-enol.
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Affiliation(s)
- Christopher L Flowers
- Laboratory of Glycochemistry and Asymmetric Synthesis (LGSA), Swiss Institute of Technology (EPFL), Batochime, 1015 Lausanne, Switzerland
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31
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Díaz-Oltra S, Angulo-Pachón CA, Murga J, Falomir E, Carda M, Marco JA. Synthesis and biological properties of the cytotoxic 14-membered macrolides aspergillide A and B. Chemistry 2010; 17:675-88. [PMID: 21207589 DOI: 10.1002/chem.201001682] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 09/03/2010] [Indexed: 11/07/2022]
Abstract
Total, stereoselective syntheses of the naturally occurring, cytotoxic macrolides aspergillide A and B are described. Olefin metatheses and asymmetric allylations were key steps in the synthetic sequences. Cytotoxicity assays against several tumor cell lines have been performed for the two aspergillides and some of the intermediates or side products of the synthetic sequence. One of these intermediates has been found markedly active against the human leukemia cancer cell line HL-60, with an IC(50) value comparable with that of the clinical drug fludarabine.
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Affiliation(s)
- Santiago Díaz-Oltra
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
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32
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33
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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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34
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Bjerre J, Bols M. Substantial Spatial Flexibility and Hydrogen Bonding within the Catalysis Exerted by Cyclodextrin Artificial Glycosidases. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000380] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Yamaoka Y, Yamamoto H. Super silyl stereo-directing groups for complete 1,5-syn and -anti stereoselectivities in the aldol reactions of beta-siloxy methyl ketones with aldehydes. J Am Chem Soc 2010; 132:5354-6. [PMID: 20349994 PMCID: PMC2868325 DOI: 10.1021/ja101076q] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this communication, we report that substrate-controlled 1,5-syn and -anti stereoinduction in the aldol reaction of beta-tris(trialkylsilyl)siloxy methyl ketones can be achieved with high diastereoselectivities. Tris(trialkylsilyl)silyl groups are easily prepared and play an important role in the selectivities of these reactions. Furthermore, all of the 1,3,5-triol stereoisomers can easily be prepared from beta-siloxy methyl ketones in no more than three steps.
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Affiliation(s)
- Yousuke Yamaoka
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
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Díaz-Oltra S, Angulo-Pachón CA, Murga J, Carda M, Marco JA. Stereoselective Synthesis of the Cytotoxic 14-Membered Macrolide Aspergillide A. J Org Chem 2010; 75:1775-8. [DOI: 10.1021/jo9027038] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Santiago Díaz-Oltra
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón, Spain
| | - César A. Angulo-Pachón
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón, Spain
| | - Juan Murga
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón, Spain
| | - Miguel Carda
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón, Spain
| | - J. Alberto Marco
- Departamento de Química Orgánica, Universitat de Valencia, E-46100 Burjassot, Valencia, Spain
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La Clair JJ. Natural product mode of action (MOA) studies: a link between natural and synthetic worlds. Nat Prod Rep 2010; 27:969-95. [DOI: 10.1039/b909989c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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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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Mohapatra DK, Das PP, Sai Reddy D, Yadav J. First total syntheses and absolute configuration of rugulactone and 6(R)-(4′-oxopent-2′-enyl)-5,6-dihydro-2H-pyran-2-one. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.08.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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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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Affiliation(s)
- Christophe Aïssa
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD, Liverpool, England
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Woo S, Kwon M, Lee E. Total Synthesis of (+)-Neopeltolide by a Prins Macrocyclization. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800386] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Woo S, Kwon M, Lee E. Total Synthesis of (+)-Neopeltolide by a Prins Macrocyclization. Angew Chem Int Ed Engl 2008; 47:3242-4. [DOI: 10.1002/anie.200800386] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Synthesis of six-membered oxygenated heterocycles through carbon–oxygen bond-forming reactions. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.092] [Citation(s) in RCA: 212] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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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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Linder J, Blake AJ, Moody CJ. Total synthesis of siphonazole and its O-methyl derivative, structurally unusual bis-oxazole natural products. Org Biomol Chem 2008; 6:3908-16. [DOI: 10.1039/b810855b] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li DR, Murugan A, Falck JR. Enantioselective, organocatalytic oxy-michael addition to gamma/delta-hydroxy-alpha,beta-enones: boronate-amine complexes as chiral hydroxide synthons. J Am Chem Soc 2007; 130:46-8. [PMID: 18076175 DOI: 10.1021/ja076802c] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An organocatalytic, enantioselective oxy-Michael addition to achiral gamma- and delta-hydroxy-alpha,beta-enones was developed. The key transformation is an unprecedented, asymmetric conjugate addition triggered by complexation between an in situ generated boronic acid hemiester and a chiral amine catalyst. Functionally, the intermediate amine-boronate complex acts as a chiral hydroxide surrogate or synthon. The resultant chiral beta-hydroxy-ketones are obtained in good to excellent yields and high ee following mild oxidative removal of the cyclic boronate. Natural products (R,12Z,15Z)-2-hydroxy-4-oxohenicosa-12,15-dienyl acetate and (+)-(S)-streptenol A were synthesized to demonstrate the utility of this reaction.
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Affiliation(s)
- De Run Li
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390
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