Synthesis and antitumor activity of fused quinoline derivatives. V. Methylindolo[3,2-b]quinolines

Yasuo Takeuchi, Masayuki Kitaomo, Ming Rong Chang, Shota Shirasaka, Chinami Shimamura, Yumiko Okuno, Masatoshi Yamato, Takashi Harayama

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Indolo[3,2-b]quinoline derivatives (1b-i) with a methyl group at each possible position have been synthesized. The 1-methyl (1b) and 9-methyl (1i) derivatives were inactive, but the 3-methyl (1d), 4-methyl (1e), and 6- methyl (1f) derivatives exhibited high treatment/control (T/C) value and cure rates against leukemia P388 in mice. These results indicated that modification of indolo[3,2-b]quinoline derivatives at 3, 4, and 6 positions may be useful approach for lead optimization.

Original languageEnglish
Pages (from-to)2096-2099
Number of pages4
JournalChemical and Pharmaceutical Bulletin
Issue number12
Publication statusPublished - 1997


  • Antitumor activity
  • Indolol[3,2-b]quinoline
  • Structure-activity relationship
  • Synthesis

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery


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