1
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Wildermuth RE, Steinborn C, Barber DM, Mühlfenzl KS, Kendlbacher M, Mayer P, Wurst K, Magauer T. Evolution of a Strategy for the Total Synthesis of (+)-Cornexistin. Chemistry 2021; 27:12181-12189. [PMID: 34105834 PMCID: PMC8457225 DOI: 10.1002/chem.202101849] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Indexed: 12/13/2022]
Abstract
Herein is given a full account of the evolution of the first total synthesis of (+)-cornexistin. Initial efforts were based on masking the reactive maleic anhydride moiety as a 3,4-substituted furan and on forming the nine-membered carbocycle in an intramolecular Conia-ene or Nozaki-Hiyama-Kishi (NHK) reaction. Those strategies suffered from low yields and were jeopardized by a late-stage installation of the Z-alkene, as well as the stereocenters along the eastern periphery. These issues were addressed by employing a chiral-pool strategy that involved construction of the crucial stereocenters at C2, C3 and C8 at an early stage with installation of the maleic anhydride as late as possible. The successful approach featured an intermolecular NHK coupling to install the Z-alkene, a syn-Evans-aldol reaction to forge the stereocenters along the eastern periphery, an intramolecular allylic alkylation to close the nine-membered carbocycle, and a challenging stepwise hydrolysis of a β-keto nitrile to furnish the maleic anhydride.
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Affiliation(s)
- Raphael E. Wildermuth
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
- Department of Chemistry and PharmacyLudwig-Maximilians-University MunichButenandtstrasse 5–1381377MunichGermany
| | - Christian Steinborn
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
| | - David M. Barber
- Research & DevelopmentWeed Control Chemistry, Bayer AG Crop Science Division Industriepark Höchst65926Frankfurt am MainGermany
| | - Kim S. Mühlfenzl
- Department of Chemistry and PharmacyLudwig-Maximilians-University MunichButenandtstrasse 5–1381377MunichGermany
| | - Mario Kendlbacher
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
| | - Peter Mayer
- Department of Chemistry and PharmacyLudwig-Maximilians-University MunichButenandtstrasse 5–1381377MunichGermany
| | - Klaus Wurst
- Institute of GeneralInorganic & Theoretical ChemistryLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
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2
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Yamaberi Y, Eto R, Umeno T, Kato T, Doi M, Yokoo H, Oba M, Tanaka M. Synthesis of ( S)-(-)-Cucurbitine and Conformation of Its Homopeptides. Org Lett 2021; 23:4358-4362. [PMID: 33978426 DOI: 10.1021/acs.orglett.1c01291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A chiral cyclic α,α-disubstituted α-amino acid, (S)-(-)-cucurbitine, which has a pyrrolidine ring with a chiral center at the α-position, was synthesized, and its homopeptides were prepared. (S)-(-)-Cucurbitine homopeptides with a Boc-protecting group formed helical structures with slight control of the helical screw sense to the left-handed form. The state of the pyrrolidine ring in (S)-(-)-cucurbitine was important for the control of the helical structures and helical screw sense of its homopeptides.
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Affiliation(s)
- Yuto Yamaberi
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Ryo Eto
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Tomohiro Umeno
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Takuma Kato
- Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan
| | - Hidetomo Yokoo
- Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-0823, Japan
| | - Makoto Oba
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.,Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-0823, Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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3
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Makura Y, Ueda A, Kato T, Iyoshi A, Higuchi M, Doi M, Tanaka M. X-ray Crystallographic Structure of α-Helical Peptide Stabilized by Hydrocarbon Stapling at i, i + 1 Positions. Int J Mol Sci 2021; 22:ijms22105364. [PMID: 34069753 PMCID: PMC8160927 DOI: 10.3390/ijms22105364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 11/16/2022] Open
Abstract
Hydrocarbon stapling is a useful tool for stabilizing the secondary structure of peptides. Among several methods, hydrocarbon stapling at i,i + 1 positions was not extensively studied, and their secondary structures are not clarified. In this study, we investigate i,i + 1 hydrocarbon stapling between cis-4-allyloxy-l-proline and various olefin-tethered amino acids. Depending on the ring size of the stapled side chains and structure of the olefin-tethered amino acids, E- or Z-selectivities were observed during the ring-closing metathesis reaction (E/Z was up to 8.5:1 for 17–14-membered rings and up to 1:20 for 13-membered rings). We performed X-ray crystallographic analysis of hydrocarbon stapled peptide at i,i + 1 positions. The X-ray crystallographic structure suggested that the i,i + 1 staple stabilizes the peptide secondary structure to the right-handed α-helix. These findings are especially important for short oligopeptides because the employed stapling method uses two minimal amino acid residues adjacent to each other.
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Affiliation(s)
- Yui Makura
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852-8521, Japan; (Y.M.); (A.I.); (M.H.)
| | - Atsushi Ueda
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852-8521, Japan; (Y.M.); (A.I.); (M.H.)
- Correspondence: (A.U.); (M.T.); Tel.: +81-95-819-2425 (A.U.); +81-95-819-2423 (M.T.)
| | - Takuma Kato
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan; (T.K.); (M.D.)
| | - Akihiro Iyoshi
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852-8521, Japan; (Y.M.); (A.I.); (M.H.)
| | - Mei Higuchi
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852-8521, Japan; (Y.M.); (A.I.); (M.H.)
| | - Mitsunobu Doi
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan; (T.K.); (M.D.)
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852-8521, Japan; (Y.M.); (A.I.); (M.H.)
- Correspondence: (A.U.); (M.T.); Tel.: +81-95-819-2425 (A.U.); +81-95-819-2423 (M.T.)
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4
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Ueda A, Higuchi M, Sato K, Umeno T, Tanaka M. Design and Synthesis of Helical N-Terminal L-Prolyl Oligopeptides Possessing Hydrocarbon Stapling. Molecules 2020; 25:E4667. [PMID: 33066194 PMCID: PMC7594088 DOI: 10.3390/molecules25204667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/10/2020] [Accepted: 10/12/2020] [Indexed: 01/17/2023] Open
Abstract
We designed and synthesized helical short oligopeptides with an L-proline on the N-terminus and hydrocarbon stapling on the side chain. Side-chain stapling is a frequently used method for the development of biologically active peptides. Side-chain stapling can stabilize the secondary structures of peptides, and, therefore, stapled peptides may be applicable to peptide-based organocatalysts. Olefin-tethered cis-4-hydroxy-L-proline 1 and L-serine 2 and 8, and (R)-α-allyl-proline 18 were used as cross-linking motifs and incorporated into helical peptide sequences. The Z- and E-selectivities were observed for the ring-closing metathesis reactions of peptides 3 and 11 (i,i+1 series), respectively, while no E/Z-selectivity was observed for that of 19 (i,i+3 series). The stapled peptide B' catalyzed the Michael addition reaction of 1-methylindole to α,β-unsaturated aldehyde, which was seven times faster than that of unstapled peptide B. Furthermore, the high catalytic activity was retained even at lower catalyst loadings (5 mol %) and lower temperatures (0 °C). The circular dichroism spectra of stapled peptide B' showed a right-handed helix with a higher intensity than that of unstapled peptide B. These results indicate that the introduction of side-chain stapling is beneficial for enhancing the catalytic activity of short oligopeptide catalysts.
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Affiliation(s)
- Atsushi Ueda
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan; (M.H.); (K.S.); (T.U.)
| | | | | | | | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan; (M.H.); (K.S.); (T.U.)
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5
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Steinborn C, Wildermuth RE, Barber DM, Magauer T. Total Synthesis of (+)-Cornexistin. Angew Chem Int Ed Engl 2020; 59:17282-17285. [PMID: 32558114 PMCID: PMC7540023 DOI: 10.1002/anie.202008158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Indexed: 12/16/2022]
Abstract
Herein, we describe the first total synthesis of (+)-cornexistin as well as its 8-epi-isomer starting from malic acid. The robust and scalable route features a Nozaki-Hiyama-Kishi reaction, an auxiliary-controlled syn-Evans-aldol reaction, and a highly efficient intramolecular alkylation to form the nine-membered carbocycle. The delicate maleic anhydride moiety of the nonadride skeleton was constructed from a β-keto nitrile. The developed route enabled the synthesis of 165 mg (+)-cornexistin.
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Affiliation(s)
- Christian Steinborn
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
| | - Raphael E. Wildermuth
- Research and Early Development, Respiratory & ImmunologyAstraZeneca43183MölndalSweden
| | - David M. Barber
- Research & Development, Weed Control ChemistryBayer AG, Crop Science DivisionIndustriepark Höchst65926Frankfurt am MainGermany
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens-University InnsbruckInnrain 80–826020InnsbruckAustria
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6
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Steinborn C, Wildermuth RE, Barber DM, Magauer T. Total Synthesis of (+)‐Cornexistin. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Christian Steinborn
- Institute of Organic Chemistry and Center for Molecular Biosciences Leopold-Franzens-University Innsbruck Innrain 80–82 6020 Innsbruck Austria
| | - Raphael E. Wildermuth
- Research and Early Development, Respiratory & Immunology AstraZeneca 43183 Mölndal Sweden
| | - David M. Barber
- Research & Development, Weed Control Chemistry Bayer AG, Crop Science Division Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular Biosciences Leopold-Franzens-University Innsbruck Innrain 80–82 6020 Innsbruck Austria
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7
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Kato T, Oba M, Nishida K, Tanaka M. Cell-Penetrating Peptides Using Cyclic α,α-Disubstituted α-Amino Acids with Basic Functional Groups. ACS Biomater Sci Eng 2018; 4:1368-1376. [PMID: 33418667 DOI: 10.1021/acsbiomaterials.8b00180] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the delivery of cell-impermeable molecules, cell-penetrating peptides (CPPs) have been attracting increasing attention as intracellular delivery tools. In the present study, we designed four types of cyclic α,α-disubstituted α-amino acids (dAAs) with basic functional groups on their five-membered rings and different chiralities at the α-position and introduced them into arginine (Arg)-rich peptides. The evaluation of cell-penetrating abilities indicated that these peptides exhibited better cell permeabilities than an Arg nonapeptide. Furthermore, peptides containing dAAs delivered plasmid DNA (pDNA) better than a commercially available transfection reagent with a longer incubation time. These results demonstrate that the introduction of cyclic dAAs with basic functional groups into Arg-rich peptides is an effective strategy for the design of CPPs as a pDNA delivery tool.
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Affiliation(s)
- Takuma Kato
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.,Osaka University of Pharmaceutical Sciences, 40-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Makoto Oba
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Koyo Nishida
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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8
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Koba Y, Ueda A, Oba M, Doi M, Demizu Y, Kurihara M, Tanaka M. Helical l
-Leu-Based Peptides Having Chiral Five-Membered Carbocyclic Ring Amino Acids with an Ethylene Acetal Moiety. ChemistrySelect 2017. [DOI: 10.1002/slct.201700832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yurie Koba
- Graduate School of Biomedical Sciences; Nagasaki University, 1-14 Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Atsushi Ueda
- Graduate School of Biomedical Sciences; Nagasaki University, 1-14 Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Makoto Oba
- Graduate School of Biomedical Sciences; Nagasaki University, 1-14 Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences; Osaka 569-1094 Japan
| | - Yosuke Demizu
- Division of Organic Chemistry; National Institute of Health Sciences; Tokyo 158-8501 Japan
| | - Masaaki Kurihara
- Graduate School of Pharmaceutical Sciences; International University of Health and Welfare; Ohtawara 324-8501 Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences; Nagasaki University, 1-14 Bunkyo-machi; Nagasaki 852-8521 Japan
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9
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Koba Y, Hirata Y, Ueda A, Oba M, Doi M, Demizu Y, Kurihara M, Tanaka M. Synthesis of chiral five-membered carbocyclic ring amino acids with an acetal moiety and helical conformations of its homo-chiral homopeptides. Biopolymers 2017; 106:555-62. [PMID: 26566886 DOI: 10.1002/bip.22769] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/02/2015] [Indexed: 01/11/2023]
Abstract
Chiral five-membered carbocyclic ring amino acids bearing various diol acetal moieties were synthesized starting from l-malic acid, and homo-chiral homopeptides composed of cyclic amino acid (S)-Ac5 c(3EG) bearing an ethylene glycol acetal, up to an octapeptide, were prepared. A conformational analysis revealed that (S)-Ac5 c(3EG) homopeptides formed helical structures. (S)-Ac5 c(3EG) homopeptides, up to hexapeptides, formed helical structures without controlling the helical screw direction, while (S)-Ac5 c(3EG) hepta- and octapeptides formed helical structures with a preference for the left-handed (M) helical-screw direction. © 2015 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 555-562, 2016.
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Affiliation(s)
- Yurie Koba
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, 852-8521, Japan
| | - Yoko Hirata
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, 852-8521, Japan
| | - Atsushi Ueda
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, 852-8521, Japan
| | - Makoto Oba
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, 852-8521, Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences, Osaka, 569-1094, Japan
| | - Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Masaaki Kurihara
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki, 852-8521, Japan
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10
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Crisma M, Toniolo C. Helical screw-sense preferences of peptides based on chiral, Cα-tetrasubstituted α-amino acids. Biopolymers 2016; 104:46-64. [PMID: 25363510 DOI: 10.1002/bip.22581] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/14/2014] [Accepted: 10/24/2014] [Indexed: 01/09/2023]
Abstract
The preferred helical screw senses of chiral α-amino acids with a C(α)-tetrasubstituted α-carbon atom, as determined in the crystal state by X-ray diffraction analyses on derivatives and peptides, are reviewed. This survey covers C(α)-methylated and C(α)-ethylated α-amino acids, as well as α-amino acids cyclized on the α-carbon, including those characterized by the combination of lack of chirality at the α-carbon with either side-chain or axial chirality. Although, in general, chiral C(α)-tetrasubstituted α-amino acids show a less pronounced bias toward a single helical screw sense than their proteinogenic (C(α)-trisubstituted) counterparts, our analysis highlights significant differences in terms of magnitude and direction of such a bias among the various sub-families of residues, and between individual amino acids within each sub-family as well. The experimental findings can be rationalized, at least in part, on the basis of steric considerations.
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Affiliation(s)
- Marco Crisma
- Institute of Biomolecular Chemistry, Padova Unit, CNR, 35131, Padova, Italy
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11
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Hirata T, Ueda A, Oba M, Doi M, Demizu Y, Kurihara M, Nagano M, Suemune H, Tanaka M. Amino equatorial effect of a six-membered ring amino acid on its peptide 310- and α-helices. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Oba M, Takazaki H, Kawabe N, Doi M, Demizu Y, Kurihara M, Kawakubo H, Nagano M, Suemune H, Tanaka M. Helical Peptide-Foldamers Having a Chiral Five-Membered Ring Amino Acid with Two Azido Functional Groups. J Org Chem 2014; 79:9125-40. [DOI: 10.1021/jo501493x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Makoto Oba
- Graduate
School of Biomedical Sciences, Nagasaki University, 1-14 Bukyo-machi, Nagasaki 852-8521, Japan
| | - Hiroomi Takazaki
- Graduate
School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Naomi Kawabe
- Graduate
School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan
| | - Yosuke Demizu
- Division
of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Masaaki Kurihara
- Division
of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Hiromu Kawakubo
- Department
of Pharmaceutical Sciences, Nihon Pharmaceutical University, Saitama 362-0806, Japan
| | - Masanobu Nagano
- Graduate
School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiroshi Suemune
- Graduate
School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Masakazu Tanaka
- Graduate
School of Biomedical Sciences, Nagasaki University, 1-14 Bukyo-machi, Nagasaki 852-8521, Japan
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13
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Oba M, Ishikawa N, Demizu Y, Kurihara M, Suemune H, Tanaka M. Helical Oligomers with a Changeable Chiral Acetal Moiety. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301450] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Hao BY, Liu JQ, Zhang WH, Chen XZ. Chiral Pool Synthesis of N-Cbz-cis-(3R,4R)-3-methylamino-4-methylpiperidine from L-Malic acid. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.5.1371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Sharma GVM, Kodeti SR, Dutta SK, Velaparthi S, Narsimulu K, Anjaiah G, Basha SJ, Kunwar AC. Chirality and Template-Mediated Induction of Helical Preferences in Achiral β-Peptides. Chemistry 2012; 18:16046-60. [DOI: 10.1002/chem.201201892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 08/20/2012] [Indexed: 11/06/2022]
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16
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Demizu Y, Yabuki YU, Doi M, Sato Y, Tanaka M, Kurihara M. Conformations of helical Aib peptides containing a pair of l-amino acid and d-amino acid. J Pept Sci 2012; 18:466-75. [PMID: 22619002 DOI: 10.1002/psc.2418] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 04/18/2012] [Accepted: 04/20/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Yosuke Demizu
- Division of Organic Chemistry; National Institute of Health Sciences; 1-18-1, Kamiyoga, Setagaya; Tokyo; 158-8501; Japan
| | - Yu-u Yabuki
- Division of Organic Chemistry; National Institute of Health Sciences; 1-18-1, Kamiyoga, Setagaya; Tokyo; 158-8501; Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences; Osaka; 569-1094; Japan
| | - Yukiko Sato
- Division of Organic Chemistry; National Institute of Health Sciences; 1-18-1, Kamiyoga, Setagaya; Tokyo; 158-8501; Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Masaaki Kurihara
- Division of Organic Chemistry; National Institute of Health Sciences; 1-18-1, Kamiyoga, Setagaya; Tokyo; 158-8501; Japan
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17
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Demizu Y, Doi M, Kurihara M, Maruyama T, Suemune H, Tanaka M. One-Handed Helical Screw Direction of Homopeptide Foldamer Exclusively Induced by Cyclic α-Amino Acid Side-Chain Chiral Centers. Chemistry 2012; 18:2430-9. [DOI: 10.1002/chem.201102902] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Indexed: 11/11/2022]
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18
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Enantioselective epoxidation of α,β-unsaturated ketones catalyzed by stapled helical l-Leu-based peptides. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.075] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Demizu Y, Doi M, Sato Y, Tanaka M, Okuda H, Kurihara M. Effect of one D-Leu residue on right-handed helical -L-Leu-Aib- peptides in the crystal state. J Pept Sci 2011; 17:420-6. [DOI: 10.1002/psc.1332] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 09/15/2010] [Accepted: 10/18/2010] [Indexed: 11/11/2022]
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20
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Yamagata N, Demizu Y, Sato Y, Doi M, Tanaka M, Nagasawa K, Okuda H, Kurihara M. Design of a stabilized short helical peptide and its application to catalytic enantioselective epoxidation of (E)-chalcone. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.12.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Demizu Y, Tanaka M, Doi M, Kurihara M, Okuda H, Suemune H. Conformations of peptides containing a chiral cyclic α, α-disubstituted α-amino acid within the sequence of Aib residues. J Pept Sci 2010; 16:621-6. [DOI: 10.1002/psc.1273] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Demizu Y, Doi M, Sato Y, Tanaka M, Okuda H, Kurihara M. Three-Dimensional Structural Control of Diastereomeric Leu-Leu-Aib-Leu-Leu-Aib Sequences in the Solid State. J Org Chem 2010; 75:5234-9. [DOI: 10.1021/jo100965r] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan
| | - Yukiko Sato
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Haruhiro Okuda
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Masaaki Kurihara
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
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Nagano M, Doi M, Kurihara M, Suemune H, Tanaka M. Stabilized α-Helix-Catalyzed Enantioselective Epoxidation of α,β-Unsaturated Ketones. Org Lett 2010; 12:3564-6. [DOI: 10.1021/ol101435w] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masanobu Nagano
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan, Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan, and Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Mitsunobu Doi
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan, Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan, and Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masaaki Kurihara
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan, Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan, and Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Hiroshi Suemune
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan, Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan, and Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masakazu Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan, Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan, and Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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24
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Fustero S, Mateu N, Simón-Fuentes A, Aceña JL. Diastereoselective Intramolecular Additions of Allyl- and Propargylsilanes to Iminium Ions: Synthesis of Cyclic and Bicyclic Quaternary Amino Acids. Org Lett 2010; 12:3014-7. [DOI: 10.1021/ol1010246] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Natalia Mateu
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - Antonio Simón-Fuentes
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | - José Luis Aceña
- Departamento de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain, and Laboratorio de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
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25
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26
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Demizu Y, Yamagata N, Sato Y, Doi M, Tanaka M, Okuda H, Kurihara M. Controlling the helical screw sense of peptides with C
-terminal L-valine. J Pept Sci 2010; 16:153-8. [DOI: 10.1002/psc.1213] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan.
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