| Project/Area Number |
10672001
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Chemical pharmacy
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| Research Institution | School of Pharmacy,Tokyo University of Pharmacy & Life Science |
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Principal Investigator |
YOKOMATSU Tsutomu Tokyo University of Pharmacy & Life Science, School of Pharmacy, Associate Professor, 薬学部, 助教授 (70158369)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1999: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Purine nucleoside phosphorylase / Protein-tyrosine phosphatase / Inhibitors / Difluoromethylenephosphonic acids / Structure-activity relation ship / プリンヌクレオシドホスホリラーゼ / プロテインチロシンホスファターゼ / ジフルオロホスホン酸 |
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| Research Abstract |
1.Synthesis and biological evaluation of novel nucleotide analogues possessing difluoromethylene phosphonic acids. Novel nucleotide analogues derived from connecting purine nucleobases and difluoromethylenephosphonic acid (CFィイD22ィエD2POィイD23ィエD2HィイD22ィエD2) with a variety of alkyl spacer were prepared for "multi-substrate analogue" inhibitors of purine nucleoside phosphorylase (PNPs). The cyclopropane and the tetrahydrofuran moieties of the alkyl spacer connecting a nucleobase and CFィイD22ィエD2POィイD23ィエD2HィイD22ィエD2 were found to be effective for good inhibition of PNPs.
2.Synthesis of α, α-difluorobenzylphosphonic acid derivatives for inhibitors of purotein-tyrosine phosphatase 1B. A series of α, α-difluorobenzylphosphonic acids having a hydrophobic functional group were prepared via the Stille coupling reaction from halogenated α, α-difluorobenzylphosphonates. Evaluation of inhibitory activity toward protein tyrosine phosphatase (PTP 1B) revealed that the ethynyl, phenylthynyl and (E)-styryl groups on the benzene nuclei increased the inhibitory activity upon α, α-defluorobenzylphosphonic acid. Inhibitory activities significantly increased upon introducing both (E)-styryl and bis-methylsulfonamide functional groups onto the benzene nuclei of α, α-difluorobenzylphosphonic acid.
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