|
1
|
Proteau-Gagné A, Nadon JF, Bernard S, Guérin B, Gendron L, Dory YL. Kinetic deconjugation: a gateway to the synthesis of Xxx-Gly (E)-alkene dipeptide isosteres. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
|
2
|
Tamamura H, Tanaka T, Tsutsumi H, Nemoto K, Mizokami S, Ohashi N, Oishi S, Fujii N. Versatile use of acid-catalyzed ring-opening of β-aziridinyl-α,β-enoates to stereoselective synthesis of peptidomimetics. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.06.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
|
3
|
Boon G, De Proft F, Langenaeker W, Geerlings P. The use of density functional theory-based reactivity descriptors in molecular similarity calculations. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00936-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
|
4
|
Ibuka T, Mimura N, Ohno H, Nakai K, Akaji M, Habashita H, Tamamura H, Miwa Y, Taga T, Fujii N, Yamamoto Y. Palladium(0)-Catalyzed Isomerization Reactions of Aziridines Bearing an alpha,beta-Unsaturated Ester Group: A Thermodynamic Preference for Chiral Alkyl (2E)-4,5-cis-4,5-Epimino-N-(alkyl- or arylsulfonyl) 2-Enoates over the Other Three Stereoisomers. J Org Chem 1997; 62:2982-2991. [PMID: 11671663 DOI: 10.1021/jo962094u] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Palladium(0)-catalyzed reactions of five sets of four stereoisomeric 4,5-epimino-N-(methanesulfonyl) or -N-(arylsulfonyl) 2-enoates reveal that 4,5-cis-(2E)-isomers are thermodynamically more stable than other isomers, in accord with calculations. A highly stereoselective synthesis of (E)-alkene dipeptide isosteres having the desired stereochemistries from unwanted stereoisomeric 4,5-epimino-N-(arylsulfonyl) 2-enoates is also presented.
Collapse
Affiliation(s)
- Toshiro Ibuka
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
|
5
|
Ibuka T, Mimura N, Aoyama H, Akaji M, Ohno H, Miwa Y, Taga T, Nakai K, Tamamura H, Fujii N, Yamamoto Y. A Thermodynamic Preference of Chiral N-Methanesulfonyl and N-Arenesulfonyl 2,3-cis-3-Alkyl-2-Vinylaziridines over Their 2,3-Trans-Isomers: Useful Palladium(0)-Catalyzed Equilibration Reactions for the Synthesis of (E)-Alkene Dipeptide Isosteres. J Org Chem 1997. [DOI: 10.1021/jo961760o] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiro Ibuka
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Norio Mimura
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Hiroshi Aoyama
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Masako Akaji
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Hiroaki Ohno
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Yoshihisa Miwa
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Tooru Taga
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Kazuo Nakai
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Hirokazu Tamamura
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Nobutaka Fujii
- Faculty of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606, Japan
| | - Yoshinori Yamamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980, Japan
| |
Collapse
|
|
6
|
Ibuka T, Akaji M, Mimura N, Habashita H, Nakai K, Tamamura H, Fujii N, Yamamoto Y. A thermodynamic preference of chiral cis-γ,δ-epimino-(E)-α,β-unsaturated esters over other stereoisomers: Synthetically useful Pd(0)-catalyzed equilibrated reactions of aziridines bearing an α,β-unsaturated ester group. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00403-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
|
7
|
Hinton JM, Osborne RH, Odell B, Hammond SJ, Blagbrough IS. Cycloproctolin and [α-Methyl-l-Tyr]-proctolin are potent antagonists of proctolin-induced inositol phosphate production in locust foregut homogenates. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00527-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
|
8
|
Osborne RH, Odell B, Blagbrough IS. Proctolin and related N-methylated pentapeptides selectively contract locust foregut but not rat ileum. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00372-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
|
9
|
Fujii N, Nakai K, Tamamura H, Otaka A, Mimura N, Miwa Y, Taga T, Yamamoto Y, Ibuka T. SN2′ Ring opening of aziridines bearing an α,β-unsaturated ester group with organocopper reagents. A new stereoselective synthetic route to (E)-alkene dipeptide isosteres. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/p19950001359] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
|
10
|
Tourw� D. Conformation-directed design of cyclic somatostatins containing a ?VI-turn mimetic. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00119148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|