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Total Syntheses of Pladienolide-Derived Spliceosome Modulators. Molecules 2021; 26:molecules26195938. [PMID: 34641481 PMCID: PMC8512135 DOI: 10.3390/molecules26195938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 11/29/2022] Open
Abstract
Pladienolides, an emerging class of naturally occurring spliceosome modulators, exhibit interesting structural features, such as highly substituted 12-membered macrocycles and epoxide-containing diene side chains. The potential of pladienolides as anti-cancer agents is confirmed by H3B-8800, a synthetic analog of this natural product class, which is currently under Phase I clinical trials. Since its isolation in 2004 and the first total synthesis in 2007, a dozen total syntheses and synthetic approaches toward the pladienolide class have been reported to date. This review focuses on the eight completed total syntheses of naturally occurring pladienolides or their synthetic analogs, in addition to a synthetic approach to the main framework of the natural product.
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Rhoades D, Rheingold AL, O'Malley BW, Wang J. Expedient Total Syntheses of Pladienolide-Derived Spliceosome Modulators. J Am Chem Soc 2021; 143:4915-4920. [PMID: 33755462 DOI: 10.1021/jacs.1c01135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Atom and step economical total syntheses of spliceosome modulating natural products pladienolides A and B are described. The strategic functionalization of an unsaturated macrolide precursor enabled the most concise syntheses of these natural products to date and provides convenient, flexible access to stereodefined macrolides to streamline medicinal chemistry explorations. Notably, this synthetic route does not depend on protecting group manipulations that traditionally define synthesis planning for polyhydroxylated natural products of polyketide origin. Its utility is further demonstrated by the enantioselective total synthesis of H3B-8800, a hitherto semisynthetic pladienolide-derived spliceosome modulator undergoing clinical trials for hematological malignancies.
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Affiliation(s)
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, United States
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From Alkynes to Heterocycles through Metal-Promoted Silylformylation and Silylcarbocyclization Reactions. Catalysts 2020. [DOI: 10.3390/catal10091012] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Oxygen and nitrogen heterocyclic systems are present in a large number of natural and synthetic compounds. In particular, oxa- and aza-silacyclane, tetrahydrofuran, benzofuran, cycloheptadifuranone, cycloheptadipyrrolone, pyrrolidine, lactone, lactam, phthalan, isochromanone, tetrahydroisoquinolinone, benzoindolizidinone, indoline and indolizidine scaffolds are present in many classes of biologically active molecules. Most of these contain a C=O moiety which can be easily introduced using carbonylative reaction conditions. In this field, intramolecular silylformylation and silylcarbocyclization reactions may afford heterocyclic compounds containing a carbonyl functional group together with a vinylsilane moiety which can be further transformed. Considering these two aspects, in this review a detailed analysis of the literature data regarding the application of silylformylation and silylcarbocyclization reactions to the synthesis of several heterocyclic derivatives is reported.
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An Alternative Mechanism for the Cobalt-Catalyzed Isomerization of Terminal Alkenes to (Z)-2-Alkenes. Angew Chem Int Ed Engl 2014; 54:801-4. [DOI: 10.1002/anie.201409902] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Indexed: 11/07/2022]
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Schmidt A, Nödling AR, Hilt G. Ein alternativer Mechanismus für die Cobalt-katalysierte Isomerisierung von terminalen Alkenen zu (Z)-2-Alkenen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409902] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mochirian P, Godin F, Katsoulis I, Fontaine I, Brazeau JF, Guindon Y. A Bidirectional Approach to the Synthesis of Polypropionates: Synthesis of C1–C13 Fragment of Zincophorin and Related Isomers. J Org Chem 2011; 76:7654-76. [DOI: 10.1021/jo2013884] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Philippe Mochirian
- (IRCM), Bio-organic Chemistry Laboratory, Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7
- Département de Chimie, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - François Godin
- (IRCM), Bio-organic Chemistry Laboratory, Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7
- Département de Chimie, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - Ioannis Katsoulis
- NCSR “Demokritos”, Institute of Physical Chemistry, Agia Paraskevi, GR 15310, Greece
| | - Isabelle Fontaine
- (IRCM), Bio-organic Chemistry Laboratory, Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7
- Département de Chimie, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - Jean-François Brazeau
- Department of Chemistry, University of California, 619 Latimer Hall, Berkeley, California, 94720, United States
| | - Yvan Guindon
- (IRCM), Bio-organic Chemistry Laboratory, Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7
- Département de Chimie, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec, Canada H3C 3J7
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada, H3A 2K6
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Aronica LA, Caporusso AM, Salvadori P. Synthesis and Reactivity of Silylformylation Products Derived from Alkynes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701219] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale, Universitàdegli Studi di Pisa, via Risorgimento 35, 56126 Pisa, Italy
| | - Anna Maria Caporusso
- Dipartimento di Chimica e Chimica Industriale, Universitàdegli Studi di Pisa, via Risorgimento 35, 56126 Pisa, Italy
| | - Piero Salvadori
- Dipartimento di Chimica e Chimica Industriale, Universitàdegli Studi di Pisa, via Risorgimento 35, 56126 Pisa, Italy
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Silylation–desilylation of propargyl amides: rapid synthesis of functionalised aldehydes and β-lactams. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.04.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Aronica LA, Raffa P, Valentini G, Caporusso AM, Salvadori P. Silylformylation – Fluoride-Assisted Aryl Migration of Acetylenic Derivatives in a Versatile Approach to the Synthesis of Polyfunctionalised Compounds. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500883] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Aronica LA, Raffa P, Valentini G, Caporusso AM, Salvadori P. Silylformylation–desilylation of propargyl amides: synthesis of α,β-unsaturated aldehydes. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2005.11.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yu J, Wang T, Liu X, Deschamps J, Flippen-Anderson J, Liao X, Cook JM. General Approach for the Synthesis of Sarpagine Indole Alkaloids. Enantiospecific Total Synthesis of (+)-Vellosimine, (+)-Normacusine B, (−)-Alkaloid Q3, (−)-Panarine, (+)-Na-Methylvellosimine, and (+)-Na-Methyl-16-epipericyclivine. J Org Chem 2003; 68:7565-81. [PMID: 14510528 DOI: 10.1021/jo030006h] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first total synthesis of (+)-Na-methyl-16-epipericyclivine (9) was completed [from d-(+)-tryptophan methyl ester] in an overall yield of 42% (eight reaction vessels). The optical rotation [[alpha]D +22.8 (c 0.50, CHCl3)] obtained on this material confirmed that the reported optical rotation [[alpha]D 0 (c 0.50, CHCl3)]47 was biogenetically unreasonable. The total syntheses of (+)-vellosimine, (+)-normacusine B, (-)-alkaloid Q3, (-)-panarine, and (+)-Na-methylvellosimine are also described. Moreover, a mixed sample (1:1) of synthetic (-)-panarine and natural (-)-panarine yielded only one set of signals in the 13C NMR; this indicated that the two compounds are identical and further confirmed the correct configuration of (+)-vellosimine, (+)-normacusine B, and (-)-alkaloid Q3. In this approach, the key templates, (-)-Na-H,Nb-benzyltetracyclic ketone 15a and (-)-Na-methyl,Nb-benzyltetracyclic ketone 43 were synthesized on multihundred gram scale by the asymmetric Pictet-Spengler reaction and a stereocontrolled Dieckmann cyclization via improved sequences. An intramolecular palladium (enolate-mediated) coupling reaction was employed to introduce the C(19)-C(20) E-ethylidene function in the sarpagine alkaloids for the first time in stereospecific fashion.
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Affiliation(s)
- Jianming Yu
- Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
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Wang X, Chakrapani H, Madine JW, Keyerleber MA, Widenhoefer RA. Cyclization/hydrosilylation of functionalized 1,6-diynes catalyzed by cationic platinum complexes containing bidentate nitrogen ligands. J Org Chem 2002; 67:2778-88. [PMID: 11975528 DOI: 10.1021/jo015986p] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 1:1 mixture of the platinum dimethyl diimine complex [PhN[double bond]C(Me)C(Me)[double bond]NPh]PtMe(2) (4a) and B(C(6)F(5))(3) catalyzed the cyclization/hydrosilylation of dimethyl dipropargylmalonate (1) and HSiEt(3) to form 1,1-dicarbomethoxy-3-methylene-4-(triethylsilylmethylene)cyclopentane (3) in 82% isolated yield with 26:1 Z:E selectivity. Platinum-catalyzed diyne cyclization/hydrosilylation tolerated a range of functional groups including esters, sulfones, acetals, silyl ethers, amides, and hindered ketones. Diynes that possessed propargylic substitution underwent facile cyclization/hydrosilylation to form silylated 1,2-dialkylidene cyclopentanes as mixtures of regioisomers. Diynes that possessed an electron-deficient internal alkyne underwent cyclization/hydrosilylation in moderate yield to form products resulting from silyl transfer to the less substituted alkyne. The silylated 1,2-dialkylidenecyclopentanes formed via diyne cyclization/hydrosilylation underwent a range of transformations including protodesilylation, Z/E isomerization, and [4 + 2] cycloaddition with dieneophiles.
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Affiliation(s)
- Xiang Wang
- P. M. Gross Chemical Laboratory, Duke University, Durham, North Carolina 27708-0346, USA
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Alonso M, Casares JA, Espinet P, Vallés E, Soulantica K. Efficient silylformylation of alkynes catalyzed by rhodium complexes with P,N donor ligands. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01086-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Fleming I, Barbero A, Walter D. Stereochemical Control in Organic Synthesis Using Silicon-Containing Compounds. Chem Rev 1997; 97:2063-2192. [PMID: 11848898 DOI: 10.1021/cr941074u] [Citation(s) in RCA: 735] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ian Fleming
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, England
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Panek JS, Liu P. Double stereodifferentiating crotylation reactions with α-amino aldehydes: Asymmetric synthesis of vicinal amino alcohol synthons. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)01092-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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