A new water-compatible dehydrating agent DPTF

Tetrahedron Letters

Volumn 37, Issue 42, 1996, Pages 7541-7544

  Murakami, Masahiro ^a   Hayashi, Minoru ^a,b   Tamura, Noriyasu ^a   Hoshino, Yujiro ^a   Ito, Yoshihiko ^a  

^a KYOTO UNIVERSITY   (Japan)

^b UNIVERSITY OF TOKYO   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; PEPTIDE SYNTHESIS; REACTION ANALYSIS; STEREOCHEMISTRY; TECHNIQUE;

EID: 0030583511     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)01712-1     Document Type: Article

References (18)

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2. For general reviews on the peptide bond formation, see: a) J. Jones, The Chemical Synthesis of Peptides, Oxford Univ. Press, Oxford (1991). b) The Peptides, ed. by E. Gross and J. Meienhofer, Academic Press, New York (1979), Vol. 1 and 2. c) M. Bodanszky, Principles of Peptide Synthesis, Springer-Verlag, Berlin (1984).
3. For general reviews on the peptide bond formation, see: a) J. Jones, The Chemical Synthesis of Peptides, Oxford Univ. Press, Oxford (1991). b) The Peptides, ed. by E. Gross and J. Meienhofer, Academic Press, New York (1979), Vol. 1 and 2. c) M. Bodanszky, Principles of Peptide Synthesis, Springer-Verlag, Berlin (1984).
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12. 4Si: C, 70.90; H, 6.45%.
13. w = 0.070) for 5078 reflections [I>3.0σ(I)], using a Crystan GM package program. The crystal contains two independent molecules of Z-4 in an asymmetric unit. The non-hydrogen atoms were refined anisotropically. Hydrogen atoms were included in the refinement at the calculated distances (0.96 Å) with isotropic temperature factors calculated from those of the bonded atoms.
14. 10. For precedent ring opening reactions of epoxyfurans, see: a) K. P. Manfredi and P. W. Jennings, J. Org. Chem., 54, 5186-5188 (1989). b) B. M. Adger, C. Barrett, J. Brennan, M. A. McKervey, and R. W. Murray, J. Chem. Soc., Chem. Commun., 1991, 1553-1554. c) W. Adam, K. Peters, and M. Sauter, Synthesis, 1994, 111-119, and references cited therein.
15. For precedent ring opening reactions of epoxyfurans, see: a) K. P. Manfredi and P. W. Jennings, J. Org. Chem., 54, 5186-5188 (1989). b) B. M. Adger, C. Barrett, J. Brennan, M. A. McKervey, and R. W. Murray, J. Chem. Soc., Chem. Commun., 1991, 1553-1554. c) W. Adam, K. Peters, and M. Sauter, Synthesis, 1994, 111-119, and references cited therein.
16. For precedent ring opening reactions of epoxyfurans, see: a) K. P. Manfredi and P. W. Jennings, J. Org. Chem., 54, 5186-5188 (1989). b) B. M. Adger, C. Barrett, J. Brennan, M. A. McKervey, and R. W. Murray, J. Chem. Soc., Chem. Commun., 1991, 1553-1554. c) W. Adam, K. Peters, and M. Sauter, Synthesis, 1994, 111-119, and references cited therein.
17. 11 M. Ueki, T. Saito, J. Sasaya, S. Ikeda, and H. Oyamada, Bull. Chem. Soc. Jpn., 61, 3653-3657 (1988).
18. 12. Recently, the racemization-suppressing effect of an aqueous two-phase system has been reported: G.-J. Ho, K. M. Emerson, D. J. Mathre, R. F. Shuman, and E. J. J. Grabowski, J. Org. Chem., 60, 3569-3570 (1995).