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Expeditious Asymmetric Synthesis of Polypropionates Relying on Sulfur Dioxide-Induced C–C Bond Forming Reactions. Catalysts 2021. [DOI: 10.3390/catal11111267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
For a long time, the organic chemistry of sulfur dioxide (SO2) consisted of sulfinates that react with carbon electrophiles to generate sulfones. With alkenes and other unsaturated compounds, SO2 generates polymeric materials such as polysulfones. More recently, H-ene, sila-ene and hetero-Diels–Alder reactions of SO2 have been realized under conditions that avoid polymer formation. Sultines resulting from the hetero-Diels–Alder reactions of conjugated dienes and SO2 are formed more rapidly than the corresponding more stable sulfolenes resulting from the cheletropic additions. In the presence of a protic or Lewis acid catalyst, the sultines derived from 1-alkoxydienes are ionized into zwitterionic intermediates bearing 1-alkoxyallylic cation moieties which react with electro-rich alkenes such as enol silyl ethers and allylsilanes with high stereoselectivity. (C–C-bond formation through Umpolung induced by SO2). This produces silyl sulfinates that react with carbon electrophiles to give sulfones (one-pot four component asymmetric synthesis of sulfones), or with Cl2, generating the corresponding sulfonamides that can be reacted in situ with primary and secondary amines (one-pot four component asymmetric synthesis of sulfonamides). Alternatively, Pd-catalyzed desulfinylation generates enantiomerically pure polypropionate stereotriads in one-pot operations. The chirons so obtained are flanked by an ethyl ketone moiety on one side and by a prop-1-en-1-yl carboxylate group on the other. They are ready for two-directional chain elongations, realizing expeditious synthesis of long-chain polypropionates and polyketides. The stereotriads have also been converted into simpler polypropionates such as the cyclohexanone moiety of baconipyrone A and B, Kishi’s stereoheptad unit of rifamycin S, Nicolaou’s C1–C11-fragment and Koert’s C16–CI fragment of apoptolidin A. This has also permitted the first total synthesis of (-)-dolabriferol.
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2
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Lecourt C, Boinapally S, Dhambri S, Boissonnat G, Meyer C, Cossy J, Sautel F, Massiot G, Ardisson J, Sorin G, Lannou MI. Elaboration of Sterically Hindered δ-Lactones through Ring-Closing Metathesis: Application to the Synthesis of the C1–C27 Fragment of Hemicalide. J Org Chem 2016; 81:12275-12290. [DOI: 10.1021/acs.joc.6b02208] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Camille Lecourt
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
| | - Srikanth Boinapally
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
| | - Sabrina Dhambri
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
| | - Guillaume Boissonnat
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI), ESPCI Paris, CNRS (UMR8231), PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Christophe Meyer
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI), ESPCI Paris, CNRS (UMR8231), PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI), ESPCI Paris, CNRS (UMR8231), PSL Research University, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - François Sautel
- Pharmacochimie
de la Régulation Epigénétique du Cancer (ETac),
CNRS/Pierre Fabre (USR3388), Centre de Recherche et de Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France
| | - Georges Massiot
- Pharmacochimie
de la Régulation Epigénétique du Cancer (ETac),
CNRS/Pierre Fabre (USR3388), Centre de Recherche et de Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France
| | - Janick Ardisson
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
| | - Geoffroy Sorin
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
| | - Marie-Isabelle Lannou
- Laboratoire
Synthèse et Méthodes, Faculté de Pharmacie, Université Paris Descartes, CNRS (UMR8638), 4 avenue de l’Observatoire, 75270 Paris Cedex 06, France
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3
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Ronson TO, Taylor RJ, Fairlamb IJ. Palladium-catalysed macrocyclisations in the total synthesis of natural products. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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4
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Sorin G, Fleury E, Tran C, Prost E, Molinier N, Sautel F, Massiot G, Specklin S, Meyer C, Cossy J, Lannou MI, Ardisson J. Synthetic Studies on Hemicalide: Development of a Convergent Approach toward the C1–C25 Fragment. Org Lett 2013; 15:4734-7. [DOI: 10.1021/ol402077e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Geoffroy Sorin
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Etienne Fleury
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Christine Tran
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Elise Prost
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Nicolas Molinier
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - François Sautel
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Georges Massiot
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Simon Specklin
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Christophe Meyer
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Marie-Isabelle Lannou
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janick Ardisson
- Faculté de Pharmacie, Université Paris Descartes, CNRS UMR 8638, 4 avenue de l’observatoire, 75270 Paris Cedex 06, France, CNRS−Pierre Fabre USR 3388, Centre de Recherche & Développement Pierre Fabre, 3 avenue Hubert Curien, 31035 Toulouse Cedex 01, France, and Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS UMR 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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5
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Brehm E, Breinbauer R. Investigation of the origin and synthetic application of the pseudodilution effect for Pd-catalyzed macrocyclisations in concentrated solutions with immobilized catalysts. Org Biomol Chem 2013; 11:4750-6. [DOI: 10.1039/c3ob41020j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Abstract
An efficient total synthesis of rhodexin A (1) is reported. An initial inverse-electron-demand Diels-Alder reaction of the acyldiene 6 with the silyl enol ether 7 gave the cycloadduct 8 with the required 4 contiguous stereocenters in a single step. This compound was then transformed into the tetracyclic enone 16, which was converted to rhodexin A (1).
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Affiliation(s)
- Michael E Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States.
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7
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Vargo TR, Hale JS, Nelson SG. Catalytic Asymmetric Aldol Equivalents in the Enantioselective Synthesis of the Apoptolidin C Aglycone. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004925] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Vargo TR, Hale JS, Nelson SG. Catalytic Asymmetric Aldol Equivalents in the Enantioselective Synthesis of the Apoptolidin C Aglycone. Angew Chem Int Ed Engl 2010; 49:8678-81. [DOI: 10.1002/anie.201004925] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Denmark SE, Muhuhi JM. Development of a general, sequential, ring-closing metathesis/intramolecular cross-coupling reaction for the synthesis of polyunsaturated macrolactones. J Am Chem Soc 2010; 132:11768-78. [PMID: 20666473 PMCID: PMC2923678 DOI: 10.1021/ja1047363] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A general strategy for the construction of macrocyclic lactones containing conjugated Z,Z-1,3-diene subunits is described. The centerpiece of the strategy is a sequential ring-closing metathesis (RCM) that forms an unsaturated siloxane ring, followed by an intramolecular cross-coupling reaction with a pendant alkenyl iodide. A highly modular assembly of the various precursors allowed the preparation of unsaturated macrolactones containing 11-, 12-, 13-, and 14-membered rings. Although the RCM process proceeded uneventfully, the intramolecular cross-coupling required extensive optimization of palladium source, solvent, fluoride source, and particularly fluoride hydration level. Under the optimal conditions (including syringe pump high dilution), the macrolactones were produced in 53-78% yield as single stereoisomers. A benzo-fused 12-membered-ring macrolactone containing an E,Z-1,3-diene unit was also prepared by the same general strategy. The E-2-styryl iodide was prepared by a novel Heck reaction of an aryl nonaflate with vinyltrimethylsilane followed by iododesilylation with ICl.
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Affiliation(s)
- Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
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10
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Abstract
A convergent and highly stereocontrolled total synthesis of the cytotoxic macrolide (+)-superstolide A is described. Key features of this synthesis include the use of bimetallic linchpin 36b for uniting the C(1)-C(15) (43) and the C(20)-C(27) (38) fragments of the natural product, a late-stage Suzuki macrocyclization of 49, and a highly diastereoselective transannular Diels-Alder reaction of macrocyclic octaene 4. In contrast, the intramolecular Diels-Alder reaction of pentaenal 5 provided the desired cycloadduct with lower stereoselectivity (6:1:1).
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Affiliation(s)
- Mariola Tortosa
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, USA
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11
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Kotha S, Mandal K. A Retrospective on the Design and Synthesis of Novel Molecules through a Strategic Consideration of Metathesis and Suzuki-Miyaura Cross-Coupling. Chem Asian J 2009; 4:354-62. [PMID: 19065595 DOI: 10.1002/asia.200800244] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India.
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12
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Abstract
A highly convergent, enantioselective total synthesis of the potent antitumor agent apoptolidin A has been completed. The key transformations include highly selective glycosylations to attach the C27 disaccharide and the C9 6'-deoxy-l-glucose, a cross-metathesis to incorporate the C1-C10 trienoate unit, and a Yamaguchi macrolactonization to complete the macrocycle. Twelve stereocenters in the polypropionate segments and sugar units were established through diastereoselective chlorotitanium enolate aldol reactions.
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Affiliation(s)
- Michael T Crimmins
- Venable and Kenan Laboratories of Chemistry, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA.
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13
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Ghidu VP, Wang J, Wu B, Liu Q, Jacobs A, Marnett LJ, Sulikowski GA. Synthesis and evaluation of the cytotoxicity of apoptolidinones A and D. J Org Chem 2008; 73:4949-55. [PMID: 18543990 PMCID: PMC2572754 DOI: 10.1021/jo800545r] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Indexed: 11/28/2022]
Abstract
Apoptolidins A-D are microbial secondary metabolites shown to be selectively cytotoxic against several cancer cell lines and noncytotoxic against normal cells. Total syntheses of apoptolidinones A and D are reported. The efficient synthetic strategy leading to the apoptolidinones features construction of the common 20-membered macrolactone by an intramolecular Suzuki reaction and stereocontrolled aldol reactions establishing the C19/C20 and C22/C23 stereocenters. In contrast to apoptolidin A, the aglycones apoptolidinone A and D were shown to be noncytotoxic when evaluated against human lung cancer cells (H292).
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Affiliation(s)
- Victor P Ghidu
- Department of Chemistry, Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235-1822, USA
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14
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Abstract
At low temperature and in the presence of an acid catalyst, SO2 adds to 1,3-dienes equilibrating with the corresponding 3,6-dihydro-1,2-oxathiin-2-oxides (sultines). These compounds are unstable above -60 °C and equilibrate with the more stable 2,5-dihydrothiophene 1,1-dioxides (sulfolenes). The hetero-Diels-Alder additions of SO2 are suprafacial and follow the Alder endo rule. The sultines derived from 1-oxy-substituted and 1,3-dioxy-disubstituted 1,3-dienes cannot be observed at -100 °C but are believed to be formed faster than the corresponding sulfolenes. In the presence of acid catalysts, the 6-oxy-substituted sultines equilibrate with zwitterionic species that react with electron-rich alkenes such as enoxysilanes and allylsilanes, generating β,γ-unsaturated silyl sulfinates that can be desilylated and desulfinylated to generate polypropionate fragments containing up to three contiguous stereogenic centers and an (E)-alkene unit. Alternatively, the silyl sulfinates can be reacted with electrophiles to generate polyfunctional sulfones (one-pot, four-component synthesis of sulfones), or oxidized into sulfonyl chlorides and reacted with amines, then realizing a one-pot, four-component synthesis of polyfunctional sulfonamides. Using enantiomerically enriched dienes such as 1-[(R)- or 1-(S)-phenylethyloxy]-2-methyl-(E,E)-penta-1,3-dien-3-yl isobutyrate, derived from inexpensive (R)- or (S)-1-phenylethanol, enantiomerically enriched stereotriads are obtained in one-pot operations. The latter are ready for further chain elongation. This has permitted the development of expeditious total asymmetric syntheses of important natural products of biological interest such as the baconipyrones, rifamycin S, and apoptolidin A.
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15
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Handa M, Smith WJ, Roush WR. Studies on the synthesis of apoptolidin A. 2. Synthesis of the disaccharide unit. J Org Chem 2007; 73:1036-9. [PMID: 18163646 DOI: 10.1021/jo7022526] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disaccharide 3 correspoinding to the disaccharide unit of apoptolidin A has been synthesized via the regio- and stereoselective TBS-OTf-promoted beta-glycosidation reaction of 2,6-dideoxy-2-iodo-beta-glucopyranosyl acetate (5) and p-methoxybenzyl 2,6-dideoxy-2-iodo-3-C-methyl-alpha-mannopyranoside (11).
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Affiliation(s)
- Masaki Handa
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, USA
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16
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Handa M, Scheidt KA, Bossart M, Zheng N, Roush WR. Studies on the Synthesis of Apoptolidin A. 1. Synthesis of the C(1)−C(11) Fragment. J Org Chem 2007; 73:1031-5. [DOI: 10.1021/jo702250z] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaki Handa
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Karl A. Scheidt
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Martin Bossart
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Nan Zheng
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - William R. Roush
- Department of Chemistry, Scripps-Florida, Jupiter, Florida 33458, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109
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17
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Jung ME, Yoo D. Synthesis of the C1-C12 fragment of the tedanolides. Aldol-non-aldol aldol approach. Org Lett 2007; 9:3543-6. [PMID: 17676748 DOI: 10.1021/ol0714038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The combination of highly stereoselective non-aldol aldol and aldol processes allows the preparation of the completely protected C1-C12 fragment 2 of the novel macrocyclic cytotoxic agent tedanolide 1.
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Affiliation(s)
- Michael E Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, USA.
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18
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Solorio DM, Jennings MP. Total Synthesis and Absolute Configuration Determination of (+)-Bruguierol C. J Org Chem 2007; 72:6621-3. [PMID: 17630804 DOI: 10.1021/jo071035l] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total synthesis and absolute configuration of bruguierol C are reported. The key step involved the diastereoselective capture of an in situ generated oxocarbenium ion via an intramolecular Friedel-Crafts alkylation.
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Affiliation(s)
- Dionicio Martinez Solorio
- Department of Chemistry, 500 Campus Drive, The University of Alabama, Tuscaloosa, Alabama 35487-0336, USA
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19
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Wehlan H, Dauber M, Fernaud MTM, Schuppan J, Keiper S, Mahrwald R, Garcia MEJ, Koert U. Apoptolidin A: total synthesis and partially glycosylated analogues. Chemistry 2007; 12:7378-97. [PMID: 16865757 DOI: 10.1002/chem.200600462] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The total synthesis of apoptolidin A is described employing an early glycosylation strategy. Strategic disconnections were chosen between C11-C12 (cross-coupling) and C19O-C1 (macrocyclization). The cis-selective glycosylation at C9-OH was achieved with the new SIBA protective group at O2/O3 of the L-glucose residue. Auxiliary substitutents at the 2-position of the 2-deoxy sugars were applied to form selectively the glycosidic linkages of the C27 disaccharide. The cross-coupling of the glycosylated northern half with the glycosylated southern half was achieved with CuI-thiophene carboxylate. The macrocyclization of a trihydroxy carboxylic acid produced the 20-membered macrolide selectively. H2SiF6 was suitable for the final deprotection of the silyl ethers and the conversion of the C21 methylketal into the hemiketal. The synthetic flexibility of the approach was proven by the synthesis of some glycovariants.
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Affiliation(s)
- Hermut Wehlan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032 Marburg, Germany
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20
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Kim Y, Fuchs PL. Lactol-directed osmylation. Stereodivergent synthesis of four C-19,20 apoptolidin diols from a single allylic hemiacetal. Org Lett 2007; 9:2445-8. [PMID: 17539652 DOI: 10.1021/ol0707564] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthetic approach to prepare four Apoptolidin C-19,20 diastereomeric diol derivatives was developed. Two diastereomers were obtained from the (Z)-form, which is converted to the (E)-form, followed by dihydroxylation to deliver two more diastereomers. The (E)-allylic hemiacetal and methoxyacetal showed opposite diastereoselectivity.
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Affiliation(s)
- Youngsoon Kim
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
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21
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Nicolaou KC, Nold AL, Milburn RR, Schindler CS. Total Synthesis of Marinomycins A–C. Angew Chem Int Ed Engl 2006; 45:6527-32. [PMID: 16977657 DOI: 10.1002/anie.200601867] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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Nicolaou KC, Nold AL, Milburn RR, Schindler CS. Total Synthesis of Marinomycins A–C. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601867] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schuppan J, Wehlan H, Keiper S, Koert U. Apoptolidinone A: Synthesis of the Apoptolidin A Aglycone. Chemistry 2006; 12:7364-77. [PMID: 16865756 DOI: 10.1002/chem.200600461] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An efficient stereocontrolled synthesis of apoptolidinone A, the aglycone of apoptolidin A is described. The synthetic strategy relies on a cross coupling between C11/C12 of a northern half (C1-C11) and a southern part (C12-C28) followed by a ring-size selective macrolactonization. Key steps for the introduction of the southern half stereocenters are a stereoselective aldol reaction, a substrate controlled dihydroxylation and a chelation-controlled Grignard/aldehyde addition. The conjugated triene of the northern half was built up successively by E-selective Wittig reactions. L-Malic acid was chosen as the chiral pool source for the C8/C9 stereocenters. The final cleavage of the silyl ethers and the conversion of the C21 methyl ketal into the hemiketal was achieved by HF.pyridine.
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Affiliation(s)
- Julia Schuppan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032 Marburg, Germany
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Fürstner A, Nevado C, Tremblay M, Chevrier C, Teplý F, Aïssa C, Waser M. Total Synthesis of Iejimalide B. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601860] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fürstner A, Nevado C, Tremblay M, Chevrier C, Teplý F, Aïssa C, Waser M. Total Synthesis of Iejimalide B. Angew Chem Int Ed Engl 2006; 45:5837-42. [PMID: 16874828 DOI: 10.1002/anie.200601860] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany.
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2004. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.10.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wender PA, Jankowski OD, Longcore K, Tabet EA, Seto H, Tomikawa T. Correlation of F0F1-ATPase inhibition and antiproliferative activity of apoptolidin analogues. Org Lett 2006; 8:589-92. [PMID: 16468718 PMCID: PMC2533578 DOI: 10.1021/ol052800q] [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: 11/28/2022]
Abstract
[structure: see text] Apoptolidin (1) exhibits potent and highly selective apoptosis inducing activity against sensitive cancer cell lines and is hypothesized to act by inhibition of mitochondrial F(0)F(1)-ATP synthase. A series of apoptolidin derivatives, including a new intermolecular Diels-Alder adduct, were analyzed for antiproliferative activity in E1A-transformed rat fibroblasts. Potent F(0)F(1)-ATPase inhibition was not a sufficient determinant of antiproliferative activity for several analogues, suggesting the existence of a secondary biological target or more complex mode of action for apoptolidin.
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Affiliation(s)
- Paul A Wender
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
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Daniel PT, Koert U, Schuppan J. Apoptolidin: Induction of Apoptosis by a Natural Product. Angew Chem Int Ed Engl 2006; 45:872-93. [PMID: 16404760 DOI: 10.1002/anie.200502698] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Apoptolidin is a natural product that selectively induces apoptosis in several cancer cell lines. Apoptosis, programmed cell death, is a biological key pathway for regulating homeostasis and morphogenesis. Apoptotic misregulations are connected with several diseases, in particular cancer. The extrinsic way to apoptosis leads through death ligands and death receptors to the activiation of the caspase cascade, which results in proteolytic degradation of the cell architecture. The intrinsic pathway transmits signals of internal cellular damage to the mitochondrion, which loses its structural integrity, and forms an apoptosome that initiates the caspase cascade. Compounds which regulate apoptosis are of high medical significance. Many natural products regulate apoptotic pathways, and apoptolidin is one of them. The known synthetic routes to apoptolidin are described and compared in this Review. Selected further natural products which regulate apoptosis are introduced briefly.
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Affiliation(s)
- Peter T Daniel
- Department of Hematology, Oncology and Tumor Immunology, University Medical Center Charité, Humboldt University of Berlin, Germany
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Daniel PT, Koert U, Schuppan J. Apoptolidin: Induktion von Apoptose durch einen Naturstoff. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200502698] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wu B, Liu Q, Jin B, Qu T, Sulikowski GA. Studies on the Synthesis of Apoptolidin: Progress on the Stereocontrolled Assembly of the Pseudo Aglycone of Apoptolidin. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500632] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Crimmins MT, Christie HS, Chaudhary K, Long A. Enantioselective Synthesis of Apoptolidinone: Exploiting the Versatility of Thiazolidinethione Chiral Auxiliaries. J Am Chem Soc 2005; 127:13810-2. [PMID: 16201800 DOI: 10.1021/ja0549289] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient, enantioselective synthesis of apoptolidinone has been completed, demonstrating the versatility of thiazolidinethione auxiliaries. Three propionate aldol additions and two asymmetric glycolate alkylations function to establish 8 of the 12 stereogenic carbon centers. A cross-metathesis reaction is utilized to assemble the C1-C10 trieneoate fragment and the C11-C28 polypropionate region of the molecule.
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Affiliation(s)
- Michael T Crimmins
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA.
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Abstract
[structure: see text] The de novo synthesis of the C9 and C27 sugar subunits (2) and (3), respectively, of the potent antitumor agent, apoptolidin, has been accomplished. A titanium tetrachloride-mediated asymmetric anti glycolate aldol addition was utilized to establish the 4' and 5' stereogenic centers of each of the three monosaccharides. Elaboration of the aldol adducts efficiently provided the three sugar units. A beta-selective glycosidation completed the construction of the C27 disaccharide.
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Affiliation(s)
- Michael T Crimmins
- Venable and Kenan Laboratories of Chemistry, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA.
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Bouchez LC, Vogel P. Synthesis of the C(1)-C(11) Polyene Fragment of Apoptolidin with a New Sulfur Dioxide-Based Organic Chemistry. Chemistry 2005; 11:4609-20. [PMID: 15954151 DOI: 10.1002/chem.200500165] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A new sulfur dioxide-based organic chemistry has been developed as a novel approach for the stereoselective synthesis of polyene fragments based on our one-pot, four-component synthesis of polyfunctional epsilon-alkanesulfonyl-gamma,delta-unsaturated ketones. The flexibility and efficiency of this methodology are illustrated by the preparation of (+)-methyl (2E,4E,6E,8R,9S)-9-{[(tert-butyl)dimethylsilyl]oxy}-2,4,6,8-tetramethyl-11-(triethylsilyl)undeca-2,4,6-trien-10-ynoate, a synthetic intermediate of Nicolaou and co-workers, that corresponds to the C(1)-C(11) fragment of apoptolidin, which was used by the authors in their total synthesis of this promising anticancer agent.
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Affiliation(s)
- Laure C Bouchez
- Laboratory of Glycochemistry and Asymmetric Synthesis, Swiss Federal Institute of Technology (EPFL), Switzerland
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