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Volumn 124, Issue 49, 2002, Pages 14668-14675

First and efficient synthesis of phosphonodifluoromethylene analogues of nucleoside 3′-phosphates: Crucial role played by sulfur in construction of the target molecules

Author keywords

[No Author keywords available]

Indexed keywords

ALCOHOLS; ESTERS; KETONES; LITHIUM COMPOUNDS; SULFUR; SYNTHESIS (CHEMICAL);

EID: 0037065304     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja027850u     Document Type: Article
Times cited : (32)

References (107)
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    • It has also been suggested that the α-monofluorophosphonates give, at least in some cases, superior results to αα-difluorination in phosphonate mimics of biological phosphates. See Chambers, R. D.; Jaouhari, R.; O'Hagan, D. Tetrahedron 1989, 45, 5101-5108. (b) Chambers, R. D.; O'Hagan, D.; Lamont, R. B.; Jain, S. C. J. Chem. Soc., Chem. Commun. 1990, 1053-1054. (c) Nieschalk, J.; Batsanov, A. S.; O'Hagan, D.; Howard, J. A. K. Tetrahedron 1996, 52, 165-176. (d) Berkowitz, D. B.; Bose, M.; Pfannenstiel, T. J.; Doukov, T. J. Org. Chem. 2000, 65, 4498-4508. (e) Berkowitz, D. B.; Bose, M. J. Fluorine Chem. 2001. 112, 13-33.
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    • It has also been suggested that the α-monofluorophosphonates give, at least in some cases, superior results to αα-difluorination in phosphonate mimics of biological phosphates. See Chambers, R. D.; Jaouhari, R.; O'Hagan, D. Tetrahedron 1989, 45, 5101-5108. (b) Chambers, R. D.; O'Hagan, D.; Lamont, R. B.; Jain, S. C. J. Chem. Soc., Chem. Commun. 1990, 1053-1054. (c) Nieschalk, J.; Batsanov, A. S.; O'Hagan, D.; Howard, J. A. K. Tetrahedron 1996, 52, 165-176. (d) Berkowitz, D. B.; Bose, M.; Pfannenstiel, T. J.; Doukov, T. J. Org. Chem. 2000, 65, 4498-4508. (e) Berkowitz, D. B.; Bose, M. J. Fluorine Chem. 2001. 112, 13-33.
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    • It has also been suggested that the α-monofluorophosphonates give, at least in some cases, superior results to αα-difluorination in phosphonate mimics of biological phosphates. See Chambers, R. D.; Jaouhari, R.; O'Hagan, D. Tetrahedron 1989, 45, 5101-5108. (b) Chambers, R. D.; O'Hagan, D.; Lamont, R. B.; Jain, S. C. J. Chem. Soc., Chem. Commun. 1990, 1053-1054. (c) Nieschalk, J.; Batsanov, A. S.; O'Hagan, D.; Howard, J. A. K. Tetrahedron 1996, 52, 165-176. (d) Berkowitz, D. B.; Bose, M.; Pfannenstiel, T. J.; Doukov, T. J. Org. Chem. 2000, 65, 4498-4508. (e) Berkowitz, D. B.; Bose, M. J. Fluorine Chem. 2001. 112, 13-33.
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    • It has also been suggested that the α-monofluorophosphonates give, at least in some cases, superior results to αα-difluorination in phosphonate mimics of biological phosphates. See Chambers, R. D.; Jaouhari, R.; O'Hagan, D. Tetrahedron 1989, 45, 5101-5108. (b) Chambers, R. D.; O'Hagan, D.; Lamont, R. B.; Jain, S. C. J. Chem. Soc., Chem. Commun. 1990, 1053-1054. (c) Nieschalk, J.; Batsanov, A. S.; O'Hagan, D.; Howard, J. A. K. Tetrahedron 1996, 52, 165-176. (d) Berkowitz, D. B.; Bose, M.; Pfannenstiel, T. J.; Doukov, T. J. Org. Chem. 2000, 65, 4498-4508. (e) Berkowitz, D. B.; Bose, M. J. Fluorine Chem. 2001. 112, 13-33.
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    • For example, the lithium salt of dialkyl difluoromethylphosphonates does not react with secondary halides or trifiates. See Obayashi, M.; Ito, E.: Kondo, K. Tetrahedron Lett. 1982, 23, 2323-2326.
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    • note
    • Prepared by the action of the Dess-Martin reagent on the corresponding alcohol. See Supporting Information.
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    • note
    • 2. Tri-n-butyltin hydride and tris(trimethylsilyl)silane were used. as hydrogen quenchers in the case of 24c and 24d.
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    • Zorbach, W. W., Tipson, R. S., Eds.; Wiley-Interscience: New York
    • This was achieved by using standard, published procedures. See Murray, H. D.; Prokop, J. In Synthetic Procedures in Nucleic Acid Chemistry; Zorbach, W. W., Tipson, R. S., Eds.; Wiley-Interscience: New York, 1968; p. 193. (b) Xie, M.; Berges, D. A.; Robins, M. J. J. Org. Chem. 1996, 61, 5178-5179.
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    • This was achieved by using standard, published procedures. See Murray, H. D.; Prokop, J. In Synthetic Procedures in Nucleic Acid Chemistry; Zorbach, W. W., Tipson, R. S., Eds.; Wiley-Interscience: New York, 1968; p. 193. (b) Xie, M.; Berges, D. A.; Robins, M. J. J. Org. Chem. 1996, 61, 5178-5179.
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    • Xie, M.1    Berges, D.A.2    Robins, M.J.3
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    • note
    • The literature reports a few cases in which complete selectivity was not observed during acetolysis of an 1,2-acetonide moiety, despite the formation of a 2-acetoxy unit. The suggestion by Shibuya of the possible participation of a phosphonothioyl unit (the resultant of the longer P=S bond, when compared to the P=O bond) might be extended to the difluorinated analogue. See ref 5h.
  • 100
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    • Despite the possible oxidation of the base nuclei by m-CPBA (see Tanaka, T.; Letsinger, R. L. Nucleic Acid Res. 1982, 10, 3249-3260), the reactions were found to be very clean.
    • (1982) Nucleic Acid Res. , vol.10 , pp. 3249-3260
    • Tanaka, T.1    Letsinger, R.L.2


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