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Fang X, Shen L, Hu X. Asymmetric total synthesis of (+)-ovafolinins A and B. Chem Commun (Camb) 2018; 54:7539-7541. [PMID: 29942973 DOI: 10.1039/c8cc03456g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
(+)-Ovafolinins A and B are two homologous lignans containing unique polycyclic skeletons. Benefiting from a highly diastereoselective alkylation of (S)-Taniguchi lactone, a double Friedel-Crafts reaction, a global debenzylation and a Cu(OAc)2-enabled benzylic oxidative cyclization, we present herein an efficient synthetic approach to (+)-ovafolinins A and B.
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Affiliation(s)
- Xianhe Fang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Lei Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Xiangdong Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
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Mary YS, Varghese HT, Panicker CY, Girisha M, Sagar BK, Yathirajan HS, Al-Saadi AA, Van Alsenoy C. Vibrational spectra, HOMO, LUMO, NBO, MEP analysis and molecular docking study of 2,2-diphenyl-4-(piperidin-1-yl)butanamide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 150:543-556. [PMID: 26079512 DOI: 10.1016/j.saa.2015.05.090] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 05/15/2015] [Accepted: 05/24/2015] [Indexed: 06/04/2023]
Abstract
The Fourier-Transform Infrared and Fourier-Transform Raman spectra of 2,2-diphenyl-4-(piperidin-1-yl)butanamide were recorded in the region 4000-400 cm(-1) and 4000-0 cm(-1). The vibrational wavenumbers are computed using HF and DFT methods. The complete vibrational assignments were performed on the basis of potential energy distribution using GAR2PED program. The geometrical parameters of the title compound are in agreement with the XRD data. From the MEP study, the negative electrostatic potential regions are mainly localized of carbonyl group and are possible sites for electrophilic attack and the positive regions are localized all the rings, indicating possible sites for nucleophilic attack. Stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using natural bond orbital analysis. The calculated HOMO and LUMO energies also confirm that charge transfer occurs within the molecule. PASS analysis of the title compound predicts among other activities, antidyskinetic activity. Molecular docking results draw us to the conclusion that the compound might exhibit inhibitory activity against adenosine A2A and may act as antidyskinetic agent.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India.
| | | | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India
| | - M Girisha
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - B K Sagar
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - H S Yathirajan
- Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University for Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Christian Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
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Panicker CY, Varghese HT, Nayak PS, Narayana B, Sarojini BK, Fun HK, War JA, Srivastava SK, Van Alsenoy C. Infrared spectrum, NBO, HOMO-LUMO, MEP and molecular docking studies (2E)-3-(3-nitrophenyl)-1-[4-piperidin-1-yl]prop-2-en-1-one. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 148:18-28. [PMID: 25863456 DOI: 10.1016/j.saa.2015.03.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/25/2015] [Accepted: 03/05/2015] [Indexed: 06/04/2023]
Abstract
FT-IR spectrum of (2E)-3-(3-nitrophenyl)-1-[4-piperidin-1-yl]prop-2-en-1-one was recorded and analyzed. The vibrational wavenumbers were computed using HF and DFT quantum chemical calculations. The data obtained from wavenumber calculations are used to assign IR bands. Potential energy distribution was done using GAR2PED software. The geometrical parameters of the title compound are in agreement with the XRD results. NBO analysis, HOMO-LUMO, first and second hyperpolarizability and molecular electrostatic potential results are also reported. The possible electrophile attacking sites of the title molecule is identified using MEP surface plot study. Molecular docking results predicted the anti-leishmanic activity for the compound.
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Affiliation(s)
- C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - Prakash S Nayak
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - H K Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Penang 11800 Malaysia; Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Javeed Ahamad War
- Department of Chemistry, Dr.H.S.Gour Central University, Sagar, M.P., India
| | - S K Srivastava
- Department of Chemistry, Dr.H.S.Gour Central University, Sagar, M.P., India
| | - C Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
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Kim JH, Ko YO, Bouffard J, Lee SG. Advances in tandem reactions with organozinc reagents. Chem Soc Rev 2015; 44:2489-507. [DOI: 10.1039/c4cs00430b] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A review of recent advances in tandem reactions with organozinc reagents that highlight their utility in organic synthesis.
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Affiliation(s)
- Ju Hyun Kim
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 120-750 Seoul
- Korea
| | - Young Ok Ko
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 120-750 Seoul
- Korea
| | - Jean Bouffard
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 120-750 Seoul
- Korea
| | - Sang-gi Lee
- Department of Chemistry and Nano Science (BK 21 Plus)
- Ewha Womans University
- 120-750 Seoul
- Korea
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Dobrikov GM, Valcheva V, Nikolova Y, Ugrinova I, Pasheva E, Dimitrov V. Enantiopure antituberculosis candidates synthesized from (−)-fenchone. Eur J Med Chem 2014; 77:243-7. [DOI: 10.1016/j.ejmech.2014.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/06/2014] [Accepted: 03/08/2014] [Indexed: 11/29/2022]
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Basu S, Kandiyal PS, Neelamraju VSK, Singh H, Ampapathi RS, Chakraborty TK. Peptidomimetics with tunable tertiary amide bond containing substituted β-proline and β-homoproline. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.12.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3-Substituted prolines: from synthesis to structural applications, from peptides to foldamers. Molecules 2013; 18:2307-27. [PMID: 23429346 PMCID: PMC6270394 DOI: 10.3390/molecules18022307] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 02/05/2013] [Accepted: 02/06/2013] [Indexed: 12/17/2022] Open
Abstract
Among the twenty natural proteinogenic amino acids, proline is unique as its secondary amine forms a tertiary amide when incorporated into biopolymers, thus preventing hydrogen bond formation. Despite the lack of hydrogen bonds and thanks to conformational restriction of flexibility linked to the pyrrolidine ring, proline is able to stabilize peptide secondary structures such as β-turns or polyproline helices. These unique conformational properties have aroused a great interest in the development of proline analogues. Among them, proline chimeras are tools combining the proline restriction of flexibility together with the information brought by natural amino acids side chains. This review will focus on the chemical syntheses of 3-substituted proline chimeras of potential use for peptide syntheses and as potential use as tools for SAR studies of biologically active peptides and the development of secondary structure mimetics. Their influence on peptide structure will be briefly described.
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De Marco R, Greco A, Rupiani S, Tolomelli A, Tomasini C, Pieraccini S, Gentilucci L. In-peptide synthesis of di-oxazolidinone and dehydroamino acid–oxazolidinone motifs as β-turn inducers. Org Biomol Chem 2013; 11:4316-26. [DOI: 10.1039/c3ob40357b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Caumes C, Delsuc N, Azza RB, Correia I, Chemla F, Ferreira F, Carlier L, Luna AP, Moumné R, Lequin O, Karoyan P. Homooligomers of substituted prolines and β-prolines: syntheses and secondary structure investigation. NEW J CHEM 2013. [DOI: 10.1039/c3nj00127j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Teklebrhan RB, Owens NW, Xidos JD, Schreckenbach G, Wetmore SD, Schweizer F. Conformational Preference of Fused Carbohydrate-Templated Proline Analogues—A Computational Study. J Phys Chem B 2012; 117:199-205. [DOI: 10.1021/jp310690c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robel B. Teklebrhan
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2,
Canada
| | - Neil W. Owens
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2,
Canada
| | - James D. Xidos
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2,
Canada
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2,
Canada
| | - Stacey D. Wetmore
- Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2,
Canada
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9, Canada
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Han MY, Zhang Y, Wang HZ, An WK, Ma BC, Zhang Y, Wang W. Organocatalytic Michael Addition of Nitro Esters to α,β-Unsaturated Aldehydes: Towards the Enantioselective Synthesis oftrans-3-Substituted Proline Derivatives. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200538] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Liu Y, Usui A, Shirakawa S, Maruoka K. Catalytic Asymmetric Synthesis of 3-Substituted Proline Derivatives by Using Phase-Transfer-Catalyzed Conjugate Addition. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shirakawa S, Liu Y, Usui A, Maruoka K. Efficient Asymmetric Synthesis of a Bicyclic Amino Acid as a Core Structure of Telaprevir. ChemCatChem 2012. [DOI: 10.1002/cctc.201200081] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Feytens D, Chaume G, Chassaing G, Lavielle S, Brigaud T, Byun BJ, Kang YK, Miclet E. Local Control of the Cis–Trans Isomerization and Backbone Dihedral Angles in Peptides Using Trifluoromethylated Pseudoprolines. J Phys Chem B 2012; 116:4069-79. [DOI: 10.1021/jp300284u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Debby Feytens
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Grégory Chaume
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 mail Gay Lussac, 95000 Cergy-Pontoise, France
| | - Gérard Chassaing
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Solange Lavielle
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
| | - Thierry Brigaud
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 mail Gay Lussac, 95000 Cergy-Pontoise, France
| | - Byung Jin Byun
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Young Kee Kang
- Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Emeric Miclet
- Laboratoire des BioMolécules, UPMC Paris 06, 4, Place Jussieu, 75005 Paris, France
- Laboratoire des BioMolécules, Departement de Chimie, Ecole Normale Superieure, 24, rue Lhomond, 75005 Paris, France
- UMR 7203, FR 2569, 4, Place Jussieu, 75005 Paris, France
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Honda T, Hisa C, Kojima N, Yamamoto N, Nagahara R. Synthetic Studies on α,α-Disubstituted Amino Acids Employing (2S,4R)-4-Hydroxyproline as the Chiral Pool: Preparation of Methyl O-Benzyl-2-(α-cyanomethyl)-D-tyrosinate and Dimethyl 2-(4-hydroxybenzyl)-L-aspartate. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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De Marco R, Tolomelli A, Campitiello M, Rubini P, Gentilucci L. Expedient synthesis of pseudo-Pro-containing peptides: towards constrained peptidomimetics and foldamers. Org Biomol Chem 2012; 10:2307-17. [DOI: 10.1039/c2ob07172j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Chang MY, Lee TW, Lin CH. Synthesis of 4,4-dialkoxy-3-piperidinols. Application to the synthesis of γ-acetate dehydropipecolinonitrile. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Teklebrhan RB, Zhang K, Schreckenbach G, Schweizer F, Wetmore SD. Intramolecular Hydrogen Bond-Controlled Prolyl Amide Isomerization in Glucosyl 3(S)-Hydroxy-5-hydroxymethylproline Hybrids: A Computational Study. J Phys Chem B 2010; 114:11594-602. [DOI: 10.1021/jp1006186] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robel B. Teklebrhan
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada, Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 Canada, and Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4 Canada
| | - Kaidong Zhang
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada, Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 Canada, and Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4 Canada
| | - G. Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada, Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 Canada, and Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4 Canada
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada, Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 Canada, and Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4 Canada
| | - Stacey D. Wetmore
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada, Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba R3A 1R9 Canada, and Department of Chemistry & Biochemistry, University of Lethbridge, Lethbridge, Alberta T1K 3M4 Canada
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Delaye PO, Vasse JL, Szymoniak J. Asymmetric synthesis of proline-based conformationally constrained tryptophan mimetic. Org Biomol Chem 2010; 8:3635-7. [DOI: 10.1039/c0ob00118j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cossy J, Pardo DG, Dumas C, Mirguet O, Déchamps I, Métro TX, Burger B, Roudeau R, Appenzeller J, Cochi A. Rearrangement of beta-amino alcohols and application to the synthesis of biologically active compounds. Chirality 2009; 21:850-6. [PMID: 19408325 DOI: 10.1002/chir.20716] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Beta-amino alcohols derived from natural amino acids have been used extensively as a powerful source of chirality. Transformation of the hydroxy group of these beta-amino alcohols into a good leaving group, by using trifluoroacetic anhydride, led to rearranged beta-amino alcohols in good yields and with high enantiomeric excesses. This rearrangement has allowed the transformation of substituted prolinols to substituted 3-hydroxypiperidines and linear beta-amino alcohols, issued from natural amino acids, to rearranged beta-amino alcohols.
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Affiliation(s)
- Janine Cossy
- Laboratoire de Chimie Organique, ESPCI ParisTech, CNRS, 75231-Paris Cedex 05, France.
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Mothes C, Larregola M, Quancard J, Goasdoué N, Lavielle S, Chassaing G, Lequin O, Karoyan P. Prolinoamino Acids as Tools to Build Bifunctionalized, Stable β-Turns in Water. Chembiochem 2009; 11:55-8. [DOI: 10.1002/cbic.200900572] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang K, Teklebrhan RB, Schreckenbach G, Wetmore S, Schweizer F. Intramolecular hydrogen bond-controlled prolyl amide isomerization in glucosyl 3'(S)-hydroxy-5'-hydroxymethylproline hybrids: influence of a C-5'-hydroxymethyl substituent on the thermodynamics and kinetics of prolyl amide cis/trans isomerization. J Org Chem 2009; 74:3735-43. [PMID: 19354261 DOI: 10.1021/jo9003458] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peptide mimics containing spirocyclic glucosyl-(3'-hydroxy-5'-hydroxymethyl)proline hybrids (Glc3'(S)-5'(CH(2)OH)HypHs) with a polar hydroxymethyl substituent at the C-5' position, such as C-terminal ester Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe and C-terminal amide Ac-Glc3'(S)-5'(CH(2)OH)Hyp-N'-CH(3), were synthesized. C-Terminal esters exhibit increased cis population (23-53%) relative to Ac-3(S)HyPro-OMe (17%) or Ac-Pro-OMe (14%) in D(2)O. The prolyl amide cis population is further increased to 38-74% in the C-terminal amide form in D(2)O. Our study shows that the stereochemistry of the hydroxymethyl substituent at the C-5' position of proline permits tuning of the prolyl amide cis/trans isomer ratio. Inversion-magnetization transfer NMR experiments indicate that the stereochemistry of the hydroxymethyl substituent has a dramatic effect on the kinetics of prolyl amide cis/trans isomerization. A 200-fold difference in the trans-to-cis (k(tc)) isomerization and a 90-fold rate difference in the cis-to-trans (k(ct)) isomerization is observed between epimeric C-5' 3 and 4. When compared to reference peptide mimics Ac-Pro-OMe and Ac-3(S)Hyp-OMe, our study demonstrates that a (13-16)-fold decrease in k(tc) and k(ct) is observed for the C-5'(S), while a (5-24)-fold acceleration is observed for the C-5'(R) epimer. DFT calculations indicate that the pyrrolidine ring prefers a C(beta) exo pucker in both Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe diastereoisomers. Computational calculations and chemical shift temperature coefficient (Delta delta/Delta T) experiments indicate that the hydroxymethyl group at C-5' in Ac-Glc3'(S)-5'(CH(2)OH)Hyp-OMe forms a stabilizing intramolecular hydrogen bond to the carbonyl of the N-acetyl group in both epimeric cis isomers. However, a competing intramolecular hydrogen bond between the hydroxymethyl groups in the pyrrolidine ring and pyran ring stabilizes the trans isomer in the C-5'(S) diastereoisomer. The dramatic differences in the kinetic properties of the diastereoisomeric peptide mimics are rationalized by the presence or absence of an intramolecular hydrogen bond between the hydroxymethyl substituent located at C-5' and the developing lone pair on the nitrogen atom of the N-acetyl group in the transition state.
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Affiliation(s)
- Kaidong Zhang
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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Carreras J, Avenoza A, Busto JH, Peregrina JM. A highly regioselective ring-opening metathesis-cross metathesis process modulated by the electronic effects of the cross metathesis partner: an entry to quaternary prolines. J Org Chem 2009; 74:1736-9. [PMID: 19133729 DOI: 10.1021/jo802399k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A modulation of the regioselectivity in the ring-opening metathesis-cross metathesis (ROCM) process, originated by the electronic features of the acyclic olefin, is described. Electron-poor and electron-rich olefins showed opposing behavior giving different regioisomers. The reaction opens the way to the synthesis of interesting proline analogues incorporating a quaternary stereocenter.
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Affiliation(s)
- Javier Carreras
- Departamento de Química, Universidad de La Rioja, Grupo de Sííntesis Química de La Rioja, UA-CSIC, 26006 Logrono, Spain
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Mothes C, Lavielle S, Karoyan P. Amino-Zinc-Ene-Enolate Cyclization: A Short Access to cis-3-Substituted Prolino-homotryptophane Derivatives. J Org Chem 2008; 73:6706-10. [PMID: 18656982 DOI: 10.1021/jo801006a] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Céline Mothes
- UPMC Univ Paris 06, UMR 7613 and FR2769, CNRS, UMR 7613 and FR2769, Synthèse, Structure et Fonction de Molécules Bioactives, Fédération de Chimie Moléculaire, UPMC, 4, Place Jussieu, 75252, Paris Cedex 05, France, and Genzyme Pharmaceuticals, Eichenweg 1, CH-4410 Liestal, Switzerland
| | - Solange Lavielle
- UPMC Univ Paris 06, UMR 7613 and FR2769, CNRS, UMR 7613 and FR2769, Synthèse, Structure et Fonction de Molécules Bioactives, Fédération de Chimie Moléculaire, UPMC, 4, Place Jussieu, 75252, Paris Cedex 05, France, and Genzyme Pharmaceuticals, Eichenweg 1, CH-4410 Liestal, Switzerland
| | - Philippe Karoyan
- UPMC Univ Paris 06, UMR 7613 and FR2769, CNRS, UMR 7613 and FR2769, Synthèse, Structure et Fonction de Molécules Bioactives, Fédération de Chimie Moléculaire, UPMC, 4, Place Jussieu, 75252, Paris Cedex 05, France, and Genzyme Pharmaceuticals, Eichenweg 1, CH-4410 Liestal, Switzerland
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27
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Etayo P, Badorrey R, Díaz-de-Villegas MD, Gálvez JA. Asymmetric Synthesis of a Novel Conformationally Constrained D-Lysine Analogue with a Piperidine Skeleton. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Medina JR, Blackledge CW, Erhard KF, Axten JM, Miller WH. Benzyl 2-Cyano-3,3-Dimethyl-1-pyrrolidinecarboxylate, a Versatile Intermediate for the Synthesis of 3,3-Dimethylproline Derivatives. J Org Chem 2008; 73:3946-9. [DOI: 10.1021/jo7027163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jesus R. Medina
- Oncology Center of Excellence for Drug Discovery, GlaxoSmithKline, Collegeville, Pennsylvania 19426
| | - Charles W. Blackledge
- Oncology Center of Excellence for Drug Discovery, GlaxoSmithKline, Collegeville, Pennsylvania 19426
| | - Karl F. Erhard
- Oncology Center of Excellence for Drug Discovery, GlaxoSmithKline, Collegeville, Pennsylvania 19426
| | - Jeffrey M. Axten
- Oncology Center of Excellence for Drug Discovery, GlaxoSmithKline, Collegeville, Pennsylvania 19426
| | - William H. Miller
- Oncology Center of Excellence for Drug Discovery, GlaxoSmithKline, Collegeville, Pennsylvania 19426
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29
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Pérez-Luna A, Botuha C, Ferreira F, Chemla F. Carbometalation of unactivated alkenes by zinc enolate derivatives. NEW J CHEM 2008. [DOI: 10.1039/b716292h] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Asymmetric synthesis of di- and trisubstituted pyrrolidinones via zirconium-mediated intramolecular coupling of N-3-alkenyl carbamates. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.01.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Denes F, Perez-Luna A, Chemla F. Diastereocontrolled Synthesis of Enantioenriched 3,4-Disubstituted β-Prolines. J Org Chem 2006; 72:398-406. [PMID: 17221954 DOI: 10.1021/jo061603h] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Enantioenriched 3,4-disubstituted beta-prolines have been prepared with a high diastereocontrol through a carbometalation reaction or through a domino Michael addition/carbometalation reaction.
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Affiliation(s)
- Fabrice Denes
- Laboratoire de Chimie Organique, UMR 7611, FR2769, Université Pierre et Marie Curie, Tour 44-45, 2ème étage, Case 183, 4 place Jussieu, 75252 Paris Cedex 05, France
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32
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Vasse JL, Joosten A, Denhez C, Szymoniak J. Stereoselective synthesis of pyrrolidines from N-allyl oxazolidines via hydrozirconation-cyclization. Org Lett 2006; 7:4887-9. [PMID: 16235914 DOI: 10.1021/ol0517776] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A new diastereoselective synthesis of pyrrolidines from readily available chiral N-allyl oxazolidines is presented. The construction of the pyrrolidine ring is achieved via a tandem hydrozirconation-stereoselective Lewis acid mediated cyclization sequence.
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Affiliation(s)
- Jean-Luc Vasse
- Réactions Sélectives et Applications, CNRS (UMR 6519) and Université de Reims, France
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33
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Bentz EL, Goswami R, Moloney MG, Westaway SM. Stereoselective synthesis of conformationally constrained ω-amino acid analogues from pyroglutamic acid. Org Biomol Chem 2005; 3:2872-82. [PMID: 16032366 DOI: 10.1039/b503994k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bicyclic lactams derived from pyroglutamic acid provide a useful scaffold for synthesis of conformationally restricted analogues of lysine, ornithine and glutamine, as well as an Ala-Ala dipeptide analogue. Amino alcohol and carboxylic acid derivatives are accessible from a common intermediate. In this strategy, the bicyclic lactam system not only controls, but also facilitates the determination of the stereochemistry of the synthetic intermediates.
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Affiliation(s)
- Emilie L Bentz
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, UK
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34
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Bräuner-Osborne H, Bunch L, Chopin N, Couty F, Evano G, Jensen AA, Kusk M, Nielsen B, Rabasso N. Azetidinic amino acids: stereocontrolled synthesis and pharmacological characterization as ligands for glutamate receptors and transporters. Org Biomol Chem 2005; 3:3926-36. [PMID: 16240010 DOI: 10.1039/b509514j] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A set of ten azetidinic amino acids, that can be envisioned as C-4 alkyl substituted analogues of trans-2-carboxyazetidine-3-acetic acid (t-CAA) and/or conformationally constrained analogues of (R)- or (S)-glutamic acid (Glu) have been synthesized in a diastereo- and enantiomerically pure form from beta-amino alcohols through a straightforward five step sequence. The key step of this synthesis is an original anionic 4-exo-tet ring closure that forms the azetidine ring upon an intramolecular Michael addition. This reaction was proven to be reversible and to lead to a thermodynamic distribution of two diastereoisomers that were easily separated and converted in two steps into azetidinic amino acids. Azetidines 35-44 were characterized in binding studies on native ionotropic Glu receptors and in functional assays at cloned metabotropic receptors mGluR1, 2 and 4, representing group I, II and III mGlu receptors, respectively. Furthermore, azetidine analogues 35, 36, and 40 were also characterized as potential ligands at the glutamate transporter subtypes EAAT1-3 in the FLIPR Membrane Potential (FMP) assay. The (2R)-azetidines 35, 37, 39, 41 and 43 were inactive in iGlu, mGlu and EAAT assays, whereas a marked change in the pharmacological profile at the iGlu receptors was observed when a methyl group was introduced in the C-4 position, compound 36 versus t-CAA. At EAAT1-3, compound 35 was inactive, whereas azetidines 36 and 40 were both identified as inhibitors and showed selectivity for the EAAT2 subtype.
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Affiliation(s)
- Hans Bräuner-Osborne
- Department of Medicinal Chemistry, Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100, Copenhagen, Denmark
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