1
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Jiang R, Ismiyarto, Abe T, Zhou DY, Asano K, Suzuki T, Sasai H, Suzuki T. Using α- and β-Epimerizations of cis-2,3-Bis(hydroxymethyl)-γ-butyrolactone for the Synthesis of Both Enantiomers of Enterolactone. J Org Chem 2022; 87:5051-5056. [PMID: 35245066 DOI: 10.1021/acs.joc.1c02801] [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
In the context of asymmetric synthesis, epimerization is usually problematic. Here, we describe the use of the epimerization of cis-2,3-bis(hydroxymethyl)-γ-butyrolactone for the synthesis of enterolactones with anti-carcinogenic, anti-inflammatory, anti-angiogenic, and antioxidant activity. Selective α- or β-epimerization of a γ-butyrolactone was used to selectively synthesize both enantiomers of enterolactone. Theoretical and kinetic studies were performed to elucidate the epimerization mechanism.
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Affiliation(s)
- Rui Jiang
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Ismiyarto
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Tsukasa Abe
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Da-Yang Zhou
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Kaori Asano
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Takayoshi Suzuki
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Hiroaki Sasai
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Takeyuki Suzuki
- Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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2
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Ambrosi A, Bringley DA, Calimsiz S, Garber JAO, Huynh H, Mohan S, Sarma K, Shen J, Curl J, Kwong B, Lapina O, Leung E, Lin L, Martins A, McGinitie T, Phull J, Roberts B, Rosario M, Shi B, Standley EA, Wang L, Wang X, Yu G. Synthesis of Rovafovir Etalafenamide (Part III): Evolution of the Synthetic Process to the Phosphonamidate Fragment. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Andrea Ambrosi
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Dustin A. Bringley
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Selcuk Calimsiz
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Jeffrey A. O. Garber
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Huy Huynh
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Sankar Mohan
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Keshab Sarma
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Jinyu Shen
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Jonah Curl
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Bernard Kwong
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Olga Lapina
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Edmund Leung
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Lennie Lin
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Andrew Martins
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Teague McGinitie
- Analytical Chemistry, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Jaspal Phull
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Ben Roberts
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Mary Rosario
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Bing Shi
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Eric A. Standley
- Process Chemistry, Gilead Sciences Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Li Wang
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Xueqing Wang
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
| | - Guojun Yu
- Process Development, Gilead Alberta ULC, 1021 Hayter Road NW, Edmonton, Alberta T6S 1A1, Canada
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3
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Mahesh R, Sharma R, Kour P, Kumar A. CeCl 3⋅7H 2O-catalysed hydrophosphonylation of aldehydes and ketones: An expeditious route to α-hydroxyphosphonates under solvent-free conditions. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2019.1633532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- R. Mahesh
- Synthetic Organic Chemistry Lab, Faculty of Sciences, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India
| | - Rupali Sharma
- Synthetic Organic Chemistry Lab, Faculty of Sciences, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India
| | - Parteek Kour
- Synthetic Organic Chemistry Lab, Faculty of Sciences, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India
| | - Anil Kumar
- Synthetic Organic Chemistry Lab, Faculty of Sciences, Shri Mata Vaishno Devi University, Katra, Jammu & Kashmir, India
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4
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Gnawali GR, Rath NP, Spilling CD. Synthesis of Phostones via the Palladium-Catalyzed Ring Opening of Epoxy Vinyl Phosphonates. J Org Chem 2019; 84:8724-8730. [PMID: 31140269 DOI: 10.1021/acs.joc.9b00905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of epoxy aldehydes with tetraethyl methylenediphosphonate gave γ,δ-epoxy vinyl phosphonates. The palladium-catalyzed addition of primary alcohols gave the monoprotected diols as single diastereoisomers. The trans- and cis-epoxides lead to opposite ( syn and anti) diastereoisomers of the addition products. The alkene of the vinyl phosphonates was subjected to hydrogenation, and the resulting saturated phosphonates underwent base-catalyzed cyclization to give phostones with a very high diastereoselectivity in the formation of the new chiral center at the phosphorus atom.
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Affiliation(s)
- Giri Raj Gnawali
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Nigam P Rath
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Christopher D Spilling
- Department of Chemistry and Biochemistry , University of Missouri, St. Louis , One University Boulevard , St. Louis , Missouri 63121 , United States
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5
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Uppal A, Kour P, Kumar A, Khajuria Y. Synthesis, structural, vibrational, electronic, thermal and Fukui analysis of diethyl (hydroxy(4-methoxyphenyl) methyl) phosphonate. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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6
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Hamper BC, Mannino MP, Mueller ME, Harrison LT, Spilling CD. Enantioseparation of α-Hydroxyallylphosphonates and Phosphonoallylic Carbonate Derivatives on Chiral Stationary Phases Using Sequential UV, Polarimetric, and Refractive Index Detection. Chirality 2016; 28:656-62. [DOI: 10.1002/chir.22627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Bruce C. Hamper
- Department of Chemistry and Biochemistry; University of Missouri-St. Louis, St. Louis; Missouri USA
| | - Michael P. Mannino
- Department of Chemistry and Biochemistry; University of Missouri-St. Louis, St. Louis; Missouri USA
| | - Melissa E. Mueller
- Department of Chemistry and Biochemistry; University of Missouri-St. Louis, St. Louis; Missouri USA
| | - Liam T. Harrison
- Department of Chemistry and Biochemistry; University of Missouri-St. Louis, St. Louis; Missouri USA
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry; University of Missouri-St. Louis, St. Louis; Missouri USA
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7
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El Mamouni EH, Cattoen M, Cordier M, Cossy J, Arseniyadis S, Ilitki H, El Kaïm L. Selective Tsuji–Trost type C-allylation of hydrazones: a straightforward entry into 4,5-dihydropyrazoles. Chem Commun (Camb) 2016; 52:14490-14493. [DOI: 10.1039/c6cc08171a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tsuji–Trost type C-allylation access to 4,5-dihydropyrazoles.
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Affiliation(s)
- El Hachemia El Mamouni
- Laboratoire de Synthèse Organique
- CNRS
- Ecole Polytechnique
- ENSTA ParisTech-UMR 7652
- Université Paris-Saclay
| | - Martin Cattoen
- Queen Mary University of London
- School of Biological and Chemical Sciences
- London
- UK
| | - Marie Cordier
- Laboratoire de Chimie Moléculaire
- UMR 9168
- Department of Chemistry
- Ecole Polytechnique
- CNRS
| | - Janine Cossy
- Laboratoire de Chimie Organique
- Institute of Chemistry
- Biology and Innovation (CBI)-ESPCI Paris/CNRS (UMR8231)/PSL Research University
- 75231 Paris Cedex 05
- France
| | - Stellios Arseniyadis
- Laboratoire de Chimie Organique
- Institute of Chemistry
- Biology and Innovation (CBI)-ESPCI Paris/CNRS (UMR8231)/PSL Research University
- 75231 Paris Cedex 05
- France
| | - Hocine Ilitki
- Laboratory of the Chemistry and Electrochemistry of the Metallic Complexes
- Department of Chemistry
- Faculty of Sciences
- University of Sciences and Technology of Oran Mohamed Boudiaf (U.S.T.O.M.B.)
- Algeria
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique
- CNRS
- Ecole Polytechnique
- ENSTA ParisTech-UMR 7652
- Université Paris-Saclay
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8
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Zhao Y, Chen T, Han D, Zhao CQ, Han LB. Facile base-mediated redox transformation: an efficient strategy for the synthesis of α-acyloxyphosphoryl compounds. Org Lett 2014; 16:6152-5. [PMID: 25398049 DOI: 10.1021/ol503014f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient one-pot synthesis of α-acyloxyphosphoryl compounds from aldehydes and hydrogen phosphoryl compounds has been developed using a facile base-mediated redox strategy. This redox transformation is applicable to synthesize a wide range of valuable α-acyloxyphosphoryl compounds with high atom- and step-economic efficiency.
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Affiliation(s)
- Yalei Zhao
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Tieqiao Chen
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Daoqing Han
- §National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Chang-Qiu Zhao
- ‡College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Li-Biao Han
- †State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.,§National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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9
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Malla RK, Ridenour JN, Spilling CD. Relay cross metathesis reactions of vinylphosphonates. Beilstein J Org Chem 2014; 10:1933-41. [PMID: 25246952 PMCID: PMC4168886 DOI: 10.3762/bjoc.10.201] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 07/14/2014] [Indexed: 11/23/2022] Open
Abstract
Dimethyl (β-substituted) vinylphosphonates do not readily undergo cross metathesis reactions with Grubbs catalyst and terminal alkenes. However, the corresponding mono- or diallyl vinylphosphonate esters undergo facile cross metathesis reactions. The improved reactivity is attributed to a relay step in the cross metathesis reaction mechanism.
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Affiliation(s)
- Raj K Malla
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
| | - Jeremy N Ridenour
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
| | - Christopher D Spilling
- Department of Chemistry and Biochemistry, University of Missouri St. Louis, One University Boulevard, St. Louis, MO 63121, USA
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10
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Spilling CD, Malla RK. Synthesis of non-racemic α-hydroxyphosphonates via asymmetric phospho-aldol reaction. Top Curr Chem (Cham) 2014; 361:83-136. [PMID: 25467537 DOI: 10.1007/128_2014_583] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
It has been more than 50 years since the first phospho-aldol reactions of dialkyl phosphites were reported. These efficient P-C bond-forming reactions have become the cornerstone of methods for the synthesis of α-hydroxyphosphonates and, by numerous available substitution reactions, the synthesis of other α- and γ-substituted phosphonates and phosphonic acids. Much of the interest in α- and γ-substituted phosphonates and phosphonic acids has been stimulated by reports of their biological activity, which is often dependent upon their absolute and relative stereochemistry. In this chapter, we review diastereoselective and enantioselective additions of dialkyl phosphites to aldehydes and ketones, otherwise called the phospho-aldol, Pudovik or Abramov reactions.
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Affiliation(s)
- Christopher D Spilling
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO, 63121, USA,
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11
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Point V, Malla RK, Carrière F, Canaan S, Spilling CD, Cavalier JF. Enantioselective Inhibition of Microbial Lipolytic Enzymes by Nonracemic Monocyclic Enolphosphonate Analogues of Cyclophostin. J Med Chem 2013; 56:4393-401. [DOI: 10.1021/jm4000787] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vanessa Point
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Raj K. Malla
- Department of Chemistry and
Biochemistry, University of Missouri−St. Louis, One University
Boulevard, St. Louis, Missouri 63121, United States
| | - Frederic Carrière
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Stéphane Canaan
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | - Christopher D. Spilling
- Department of Chemistry and
Biochemistry, University of Missouri−St. Louis, One University
Boulevard, St. Louis, Missouri 63121, United States
| | - Jean-François Cavalier
- CNRS, Aix-Marseille Université,
Enzymologie Interfaciale et Physiologie de la Lipolyse, UMR 7282,
31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
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12
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Lee HS, Lim CH, Lee HJ, Kim JN. Pd-Catalyzed Oxidative Arylation of Cinnamylphosphonates: An Efficient Synthesis of (Z)-Alkenylphosphonates. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.11.3817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Tripathi S, Chan MH, Chen C. An expedient synthesis of honokiol and its analogues as potential neuropreventive agents. Bioorg Med Chem Lett 2011; 22:216-21. [PMID: 22142539 DOI: 10.1016/j.bmcl.2011.11.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/21/2011] [Accepted: 11/09/2011] [Indexed: 01/23/2023]
Abstract
An efficient synthesis of honokiol with Suzuki-Miyaura cross coupling obtained an overall yield of 45%. The proposed approach successfully synthesized several structurally similar alkyl, alkenyl and alkynyl analogues, seven of which showed potential neuropreventive activity against MPP(+)-induced and CHP/TBHP oxidative stress induced neuroblastoma cell death.
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Affiliation(s)
- Subhankar Tripathi
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
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14
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Okada Y, Nishimoto A, Akaba R, Chiba K. Electron-Transfer-Induced Intermolecular [2 + 2] Cycloaddition Reactions Based on the Aromatic “Redox Tag” Strategy. J Org Chem 2011; 76:3470-6. [DOI: 10.1021/jo200490q] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yohei Okada
- Department of Applied Life Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Asaki Nishimoto
- Department of Applied Life Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Ryoichi Akaba
- Department of Chemistry, Gunma College of Technology, 580 Toriba-machi, Maebashi, Gunma 371-8530, Japan
| | - Kazuhiro Chiba
- Department of Applied Life Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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15
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Doyle MP, Ratnikov M, Liu Y. Intramolecular catalytic asymmetric carbon–hydrogen insertion reactions. Synthetic advantages in total synthesis in comparison with alternative approaches. Org Biomol Chem 2011; 9:4007-16. [DOI: 10.1039/c0ob00698j] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Gresser MJ, Wales SM, Keller PA. The attempted stereoselective synthesis of chiral 2,2′-biindoline. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Hajra S, Giri AK, Hazra S. Asymmetric syntheses of (-)-enterolactone and (7'R)-7'-hydroxyenterolactone via organocatalyzed aldol reaction. J Org Chem 2009; 74:7978-81. [PMID: 19775122 DOI: 10.1021/jo900810a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Short syntheses of (-)-enterolactone (1a) and (7'R)-7'-hydroxyenterolactone (1b) have been achieved utilizing organocatalyzed asymmetric cross-aldol reaction of aldehydes 2 and 3 and base-mediated alkylation of lactones 5 and 4.
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Affiliation(s)
- Saumen Hajra
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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18
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He A, Sutivisedsak N, Spilling CD. Stereoselective synthesis of cyclic ethers via the palladium-catalyzed intramolecular addition of alcohols to phosphono allylic carbonates. Org Lett 2009; 11:3124-7. [PMID: 19586068 PMCID: PMC2717013 DOI: 10.1021/ol900980s] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cross metathesis of the acrolein-derived phosphono allylic carbonate and hydroxy alkenes using second generation Grubbs catalyst and copper(I) iodide gave the substituted phosphonates in good yield. Stereospecific palladium(0)-catalyzed cyclization gave tetrahydrofuran and tetrahydropyran vinyl phosphonates. Regioselective Wacker oxidation of the vinyl phosphonate gave the beta-keto phosphonate, which underwent HWE reaction with benzaldehyde to yield the unsaturated ketone. The utility of the cross metathesis/cyclization protocol was further demonstrated by a formal synthesis of centrolobine.
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Affiliation(s)
- Anyu He
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA
| | - Nongnuch Sutivisedsak
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA
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19
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Denmark SE, Werner NS. Cross-coupling of aromatic bromides with allylic silanolate salts. J Am Chem Soc 2009; 130:16382-93. [PMID: 18998687 DOI: 10.1021/ja805951j] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The sodium salts of allyldimethylsilanol and 2-butenyldimethylsilanol undergo palladium-catalyzed cross-coupling with a wide variety of aryl bromides to afford allylated and crotylated arenes. The coupling of both silanolates required extensive optimization to deliver the expected products in high yields. The reaction of the allyldimethylsilanolate takes place at 85 degrees C in 1,2-dimethoxyethane with allylpalladium chloride dimer (2.5 mol %) to afford 73-95% yields of the allylation products. Both electron-rich and sterically hindered bromides reacted smoothly, whereas electron-poor bromides cross-coupled in poor yield because of a secondary isomerization to the 1-propenyl isomer (and subsequent polymerization). The 2-butenyldimethylsilanolate (E/Z, 80:20) required additional optimization to maximize the formation of the branched (gamma-substitution) product. A remarkable influence of added alkenes (dibenzylideneacetone and norbornadiene) led to good selectivities for electron-rich and electron-poor bromides in 40-83% yields. However, bromides containing coordinating groups (particularly in the ortho position) gave lower, and in one case even reversed, selectivity. Configurationally homogeneous (E)-silanolates gave slightly higher gamma-selectivity than the pure (Z)-silanolates. A unified mechanistic picture involving initial gamma-transmetalation followed by direct reductive elimination or sigma-pi isomerization can rationalize all of the observed trends.
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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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20
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Bandyopadhyay S, Dutta S, Spilling CD, Dupureur CM, Rath NP. Synthesis and biological evaluation of a phosphonate analog of the natural acetyl cholinesterase inhibitor cyclophostin. J Org Chem 2008; 73:8386-91. [PMID: 18821801 DOI: 10.1021/jo801453v] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two diastereomers of a phosphonate analog 6 of the AChE inhibitor cyclophostin were synthesized. The substitution reaction of phosphono allylic carbonate 10a with methyl acetoacetate gave the vinyl phosphonate 9a. Attempted hydrogenation/debenzylation gave an unexpected enolether lactone. Alternatively, selective hydrogenation, demethylation, cyclization and debenzylation gave the phosphonate analog of cyclophostin as a separable mixture of diastereomers 6. The trans phosphonate isomer was more active than the cis isomer against AChE from two sources.
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Affiliation(s)
- Saibal Bandyopadhyay
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, 1 University Boulevard, St. Louis, Missouri 63121, USA
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21
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Yan B, Spilling CD. Synthesis of Cyclopentenones via Intramolecular HWE and the Palladium-Catalyzed Reactions of Allylic Hydroxy Phosphonate Derivatives. J Org Chem 2008; 73:5385-96. [DOI: 10.1021/jo8004028] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bingli Yan
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121-4499
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry, University of Missouri−St. Louis, One University Boulevard, St. Louis, Missouri 63121-4499
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Ok T, Jeon A, Lee J, Lim JH, Hong CS, Lee HS. Enantiomerically pure synthesis of beta-substituted gamma-butyrolactones: a key intermediate to concise synthesis of pregabalin. J Org Chem 2007; 72:7390-3. [PMID: 17715971 DOI: 10.1021/jo0709605] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chiral beta-substituted gamma-butyrolactones are known to be important intermediates for many biologically active compounds such as gamma-aminobutyric acid (GABA) derivatives and lignans. We have developed a general, convenient, and scalable synthetic method for enantiomerically pure beta-substituted gamma-butyrolactones, with either configuration, via nucleophilic cyclopropane ring opening of (1S,5R)- or (1R,5S)-bicyclic lactone followed by decarbethoxylation. The utility of our method was demonstrated by streamlined synthesis of pregabalin ((S)-3-isobutyl-gamma-aminobutyric acid), an anticonvulsant drug for the treatment of peripheral neuropathic pain.
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Affiliation(s)
- Taedong Ok
- Department of Chemistry and School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea 305-701
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Feng D, Chen R, Huang Y, Song H. A new convenient way to synthesize 1-hydroxyphosphonates from heterocyclic aldehydes and ketones under microwave irradiation. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20304] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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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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De la Cruz A, He A, Thanavaro A, Yan B, Spilling CD, Rath NP. Allylic hydroxy phosphonates: versatile chiral building blocks. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2004.11.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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He A, Yan B, Thanavaro A, Spilling CD, Rath NP. Synthesis of Nonracemic Allylic Hydroxy Phosphonates via Alkene Cross Metathesis. J Org Chem 2004; 69:8643-51. [PMID: 15575740 DOI: 10.1021/jo0490090] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Allylic hydroxy phosphonates and their derivatives can be interconverted by using cross metathesis with second generation Grubbs catalyst. The absolute stereochemistry of the starting phosphonate is conserved in the product. Cross metathesis reaction of the acrolein-derived phosphonate 2a yields a series of functionalized allylic hydroxy phosphonates. However, the cross metathesis reaction is often accompanied by competing dimerization and alkene migration reactions leading to a reduction in yield. The cinnamaldehyde- and crotonaldehyde-derived phosphonates 2b and 2c were also examined. In general, the metathesis reactions of phosphonates 2b and 2c are considerably slower than those for phosphonate 2a leading to mixtures. Several hydroxyl-protected derivatives of the phosphonate 2a (methyl carbonate 3a, acetate 4a, N-tosyl carbamate 5a, TBDMS 6a, and acetoacetate 7a) undergo metathesis without competing side reactions to give substituted allylic phosphonates in good to excellent yield.
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Affiliation(s)
- Anyu He
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, 8001 Natural Bridge Road, St. Louis, MO 63121, USA
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