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Volumn , Issue 3, 2009, Pages 407-410

One-pot synthesis of ureido peptides and urea-tethered glycosylated amino acids employing deoxo-fluor and TMSN3

Author keywords

Acyl fluoride; Deoxo fluor; Neoglycopeptides; Peptidomimetics; Ureido linkage

Indexed keywords


EID: 62249137102     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-0028-1087538     Document Type: Article
Times cited : (30)

References (36)
  • 30
    • 0035083123 scopus 로고    scopus 로고
    • Utility of commercial activated zinc dust to deprotonate amine hydrochloride salts is documented. Sureshbabu et al. demonstrated the conversion of amino acid/peptide acid ester hydrochloride salts into the corresponding free amines, see: (a) Sureshbabu, V. V.; Ananda, K. J. Pept. Res. 2001, 57, 223.
    • Utility of commercial activated zinc dust to deprotonate amine hydrochloride salts is documented. Sureshbabu et al. demonstrated the conversion of amino acid/peptide acid ester hydrochloride salts into the corresponding free amines, see: (a) Sureshbabu, V. V.; Ananda, K. J. Pept. Res. 2001, 57, 223.
  • 31
    • 0032564614 scopus 로고    scopus 로고
    • For the use of zinc dust as HCl scavenger in peptide synthesis via N-Fmoc amino acid chlorides under non-Schotten-Baumann conditions, see: Gopi, H. N.; Sureshbabu, V. V. Tetrahedron Lett. 1998, 39, 9769.
    • (b) For the use of zinc dust as HCl scavenger in peptide synthesis via N-Fmoc amino acid chlorides under non-Schotten-Baumann conditions, see: Gopi, H. N.; Sureshbabu, V. V. Tetrahedron Lett. 1998, 39, 9769.
  • 32
    • 0033980637 scopus 로고    scopus 로고
    • For a similar application in N-Boc-Z-Fmoc amino acid fluoride couplings under neutral conditions, see: Sureshbabu, V. V.; Ananda, K. Lett. Pept. Sci. 2000, 7, 41.
    • (c) For a similar application in N-Boc-Z-Fmoc amino acid fluoride couplings under neutral conditions, see: Sureshbabu, V. V.; Ananda, K. Lett. Pept. Sci. 2000, 7, 41.
  • 33
    • 0009453990 scopus 로고    scopus 로고
    • For the preparation of oligomer-free Z-amino acids employing ZCl/Zn dust, see: Gopi, H. N.; Ananda, K.; Sureshbabu, V. V. Protein Pept. Lett. 1999, 6, 233.
    • (d) For the preparation of oligomer-free Z-amino acids employing ZCl/Zn dust, see: Gopi, H. N.; Ananda, K.; Sureshbabu, V. V. Protein Pept. Lett. 1999, 6, 233.
  • 34
    • 62249154492 scopus 로고    scopus 로고
    • 2O to afford the urea as a colorless crystalline solid.
    • 2O to afford the urea as a colorless crystalline solid.
  • 35
    • 62249128584 scopus 로고    scopus 로고
    • Selected Spectroscopic Data Fmoc-Val-ψ(NH-CO-NH)-Leu-OBzl (2b, white solid, mp 184°C. 1H NMR (300 MHz, DMSO, δ, 0.92 (12 H, m, 1.32-1.85 (4 H, m, 3.10 (2 H, s, 3.70-3.80 (2 H, m, 4.20 (1 H, t, 4.42 (2 H, m, 5.10 (1 H, d, 6.60-6.70 (2 H, m, 7.20-7.85 (13 H, m, 13C NMR (200 MHz, DMSO, δ, 18.5, 19.5, 22.0, 23.1, 24.5, 29.2, 40.3, 47.2, 59.0, 66.6, 120.0, 125.1, 126.5, 127.0, 127.2, 128.4, 129.3, 137.6, 141.2, 144.0, 155.4, 156.8, 176.4. HRMS: m/z calcd for C33H39N3NaO5: 580.2787; found: 580.2774 [M, Na, Z-Gly-ψ(NH-CO-NH)-Val-OMe (2d, Off-white solid, mp 159°C. 1H NMR (300 MHz, DMSO, δ, 0.93 (6 H, d, 3.14 (1 H, m, 3.58 (3 H, s, 4.51 (3 H, m, 5.30 (2 H, s, 6.10 (2 H, m, 6.48 (1 H, t, 7.20-7.40 (3 H, m, 13C NMR 200 MHz, DMSO, δ, 17.1, 31.1, 52.1, 56.2, 57.8, 65.4, 127.1, 127.2, 128.5, 141.2, 156.8, 157
    • 8: 473.1900; found: 473.1918 [M + Na].
  • 36
    • 62249144006 scopus 로고    scopus 로고
    • 4 buffer were added and the reaction mixture was warmed to 35°C. Sodium chlorite and bleach were added, and the reaction mixture was stirred till completion of reaction. A simple workup lead to the isolation of the desired sugar-6-acid. See: Jhao, M.; Li, J.; Mano, E.; Song, Z.; Tschaen, D. M.; Grabowski, E. J. J.; Reider, P. J. J. Org. Chem. 1999, 64, 2564.
    • 4 buffer were added and the reaction mixture was warmed to 35°C. Sodium chlorite and bleach were added, and the reaction mixture was stirred till completion of reaction. A simple workup lead to the isolation of the desired sugar-6-acid. See: Jhao, M.; Li, J.; Mano, E.; Song, Z.; Tschaen, D. M.; Grabowski, E. J. J.; Reider, P. J. J. Org. Chem. 1999, 64, 2564.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.