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Volumn 73, Issue 4, 2008, Pages 1403-1412

Bismethylene triphosphate nucleotides of uridine 4-phosphate analogues: A new class of anionic pyrimidine nucleotide analogues

Author keywords

[No Author keywords available]

Indexed keywords

ANTICANCER AGENTS; ANTIVIRAL AGENTS; ESTER MOIETY; METHANOLYSIS;

EID: 39349092031     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo702249j     Document Type: Article
Times cited : (21)

References (77)
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    • (1986) Lipids and membranes: Past, present and future , pp. 171-206
    • Kennedy, E.P.1
  • 16
    • 0001699484 scopus 로고
    • Sandler, M, Smith, H. J, Eds, Oxford University Press: New York
    • Kensler, T. W.; Cooney, D. A. In Design of Enzyme Inhibitors as Drugs; Sandler, M., Smith, H. J., Eds.; Oxford University Press: New York, 1989; pp 379-401.
    • (1989) Design of Enzyme Inhibitors as Drugs , pp. 379-401
    • Kensler, T.W.1    Cooney, D.A.2
  • 17
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    • Savickiene, J.; Gineitis, A. Int. J. Biochem. Cell Biol. 2003, 35, 1482.
    • Savickiene, J.; Gineitis, A. Int. J. Biochem. Cell Biol. 2003, 35, 1482.
  • 21
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    • Momparler, R. L; Bouffard, D. Y.; Momparler, L. F.; Marquet, J.; Zittoun, J.; Marie, J-P.; Zittoun, R. Int. J. Cancer 1991, 49, 573.
    • (d) Momparler, R. L; Bouffard, D. Y.; Momparler, L. F.; Marquet, J.; Zittoun, J.; Marie, J-P.; Zittoun, R. Int. J. Cancer 1991, 49, 573.
  • 39
    • 2142742056 scopus 로고
    • For some examples: a
    • For some examples: (a) Biller, S.; Forster, C. Tetrahedron, 1990, 46, 6645.
    • (1990) Tetrahedron , vol.46 , pp. 6645
    • Biller, S.1    Forster, C.2
  • 61
    • 39349108693 scopus 로고    scopus 로고
    • We were unable to develop conditions that would allow us to selectively deprotect 33. The fluorines in 33 are introduced by electrophilic fluorination of 32 (see ref 15, Consequently, acetyl protection of the hydroxyl groups was not an option. We also prepared compound 33, albeit in low yield, by electrophilic fluorination of compound 32 except the 5′OH was protected with a dimethoxytrityl (DMT) group. Surprisingly, all attempts to remove the DMT group resulted in the formation of two inseparable products in modest yield. 1H, 19F, 31P NMR suggested that one of these compounds was compound 39 but we could not obtain it in pure form
    • 31P NMR suggested that one of these compounds was compound 39 but we could not obtain it in pure form.
  • 63
    • 39349115446 scopus 로고    scopus 로고
    • The structures of 54 and 55 were assigned based on the 31P NMR, 1H NMR, and mass spectral data of partially purified material. For example, the LREIMS of the crude product that was isolated from the attempted Mitsunobu reaction of phosphoramidate 28 and 44 exhibited a m/z of 494, which is consistent with compound 55. In the 31P NMR this product exhibited a chemical shift of 8.1 ppm, which is a downfield shift of approximately 6.5 ppm compared to compound 28. This is consistent with a phosphoramidate to phosphoryl imine conversion (see ref 31, The 1H NMR of the product that was isolated from the attempted Mitsunobu reaction of phosphoramidate 28 and 44 exhibited significant changes in comparison to the 1H NMR of compound 28. These include the following: (a) the doublet corresponding to phosphoramidate N-H proton in 28 is no longer evident
    • 1H NMR of compound 28. These include the following: (a) the doublet corresponding to phosphoramidate N-H proton in 28 is no longer evident,
  • 64
    • 39349106458 scopus 로고    scopus 로고
    • downfield shifts with increased geminal coupling for the two diastereotopic protons attached to C-5′,
    • (b) downfield shifts with increased geminal coupling for the two diastereotopic protons attached to C-5′,
  • 65
    • 39349101728 scopus 로고    scopus 로고
    • an upfield shift of about 0.4 ppm for the H-1′ proton, and
    • (c) an upfield shift of about 0.4 ppm for the H-1′ proton, and
  • 66
    • 39349109203 scopus 로고    scopus 로고
    • a downfield shift of approximately 0.5 ppm for the H-5 proton. Similar differences were also found between compound 27 and the product that was isolated from the attempted Mitsunobu reaction of phosphoramidate 27 and 44. All of these changes are consistent with the conversion of a nucleoside into a 1,5-anhydro nucleoside (see refs 32a-c).
    • (d) a downfield shift of approximately 0.5 ppm for the H-5 proton. Similar differences were also found between compound 27 and the product that was isolated from the attempted Mitsunobu reaction of phosphoramidate 27 and 44. All of these changes are consistent with the conversion of a nucleoside into a 1,5-anhydro nucleoside (see refs 32a-c).
  • 69
    • 39349105697 scopus 로고    scopus 로고
    • Kimura, J.; Fujisawa, Y.; Sawada, T. Chem. Lett. 1974, 691.
    • (b) Kimura, J.; Fujisawa, Y.; Sawada, T. Chem. Lett. 1974, 691.
  • 72
    • 39349093954 scopus 로고    scopus 로고
    • We have also attempted to convert phosphonic acid 44 to the corresponding phosphonyl chloride in situ and then react the crude phosphonyl chloride with 28. However, only trace amounts of the coupled product were obtained using this procedure
    • We have also attempted to convert phosphonic acid 44 to the corresponding phosphonyl chloride in situ and then react the crude phosphonyl chloride with 28. However, only trace amounts of the coupled product were obtained using this procedure.
  • 73
    • 39349116549 scopus 로고    scopus 로고
    • Wada et al. reported the synthesis of unprotected 12 and found the compound to be stable under basic conditions (0.1 M NaOH, coned ammonia) unstable under acidic conditions (t1/2, 8 h in 0.1 N HCl) and have a t1/2 of 60 min at 70°C in 0.1 M ammonium acetate, pH 7.0. No studies were performed under neutral conditions at room temperature see refs 17 and 18, We have found that its BMT nucleotide, compound 55, undergoes very slow dephosphorylation in D2O at room temperature. The dephosphorylation is presumed to proceed by a metaphosphate intermediate
    • 2O at room temperature. The dephosphorylation is presumed to proceed by a metaphosphate intermediate.


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