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Creation of novel antitumor agents having DNA topoisomerase inhibition activity

Research Project

Project/Area Number 11680591
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Bioorganic chemistry
Research InstitutionNagasaki university

Principal Investigator

IWAO Masatomo  Nagasaki university, Faculty of engineering, Professor, 工学部, 教授 (00100892)

Co-Investigator(Kenkyū-buntansha) FUKUDA Tsutomu  Nagasaki university, Faculty of engineering, Research associate, 工学部, 助手 (80295097)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsmarine natural products / pyrroloiminoquinone / anticancer agent / topoisomerase inhibition / トポイソメラーゼ / リチオ化反応
Research Abstract

Pyrroloiminoquinone marine alkaloids exhibit antitumor activity through DNA topoisomerase inhibition.
Consequently, these alkaloids have attracted considerable attention as new leads of antitumor agent. Although several methods to construct pyrroloiminoquinone skeleton have been developed so far, no method to introduce substituents on the desirable position has been establislted.
Previously, we have developed a novel strategy to build up the pyrroloiminoquinone core, and achieved the total synthesis of makaluvamined A, D, I and K.Following this study, we have now establised an efficient method to bind a variety of substituents at the C-6 position of the pyrroloiminoquinone core via regioselective lithiation of 5-Boc-TIPS-7-methoxy-1,3,4,5-tetrahydropyrrolo [4,3,2-de] quinoline, which was readily prepared from a key intermediatein the makaluvamine synthesis. This method was successfully applied to the first total synthesis of veiutamine, a new type of pyrroloiminoquinone marine alkaloid having p-hydroxybenzyl group at C-6.
In addition, we have developed C-6 and C-2 selective lithiation of 5-Boc-7-methoxy-1-methyl-1,3,4,5- tetrahydropyrrolo [4,3,2-de] quinoline and synthesized a number of its derivatives. In conclusion, we believe these methods developed in this study enable to produce a variety of pyrroloiminoquinone marine alkaloids and their analogues. The subsequent structure-activity relationship studies of these compounds would allow to create a new type of anticancer agent.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Y.Moro-oka,T.Fukuda,M.Iwao: "The first total synthesis of Veiutamine, a new type of pyrroloiminoquinone marine alkaloid"Tetrahedron Letters. 40・9. 1713-1716 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Moro-oka,S.Iwakiri,T.Fukuda,M.Iwao: "Remarkable effect of water in a regioselective lithiation of 5-(tert-butoxycarbonyl)-7-methoxy-1-methyl-1,3,4,5-tetrahydro[4,3,2-de]quinoline"Tetrahedron Letters. 41・6. 5225-5228 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Moro-oka, T.Fukuda, M.Iwao: "The first total synthesis of Veiutamine, a new type of pyrroloiminoquinone marine alkaloid"Tetrahedron Letters. 40(9). 1713-1716 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Moro-oka, S.Iwakiri, T.Fukuda, M.Iwao: "Remarkable effect of water in a regioselective lithiation of 5-(tert-butoxycarbonyl)-7-methoxy-1-methyl-1, 3, 4, 5-tetrahydro [4, 3 , 2-de] quinoline"Tetrahedron Letters. 41(6). 5225-5228 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Moro-oka,S.Iwakiri,T.Fukuda,M.Iwao: "Remarkable effect of water in a regioselective lithiation of 5-(tert-butoxycarbonyl)-7-methoxy-1-methyl-1, 3, 4, 5-tetrahydro [4, 3, 2-de] quinoline"Tetrahedron Letters. 41・6. 5225-5228 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Moro-oka: "The First Total Synthesis of Veiutamine,A New Type of Pyrroloiminoquinone Marine Alkaloid."Tetrahedron Letters. 40・9. 1713-1716 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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