Polycyclic n-Hetero Compounds. XVIII. Synthesis of the 11,13,15-Triazasteroidal Skeleton with an Oxygen Function at C-17

Takashi Hirota, Kimiko Katsuta, Keiko Kawanishi, Tetsuto Namba, Kenji Sasaki, Shōhei Hayakawa

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    N-(5,6-Dihydro-4-benzo[h]quinazolinyl)amino acids (III and VII) were synthesized by condensation of 4-chloro-5,6-dihydrobenzo[h]quinazoline (II) with several amino acids and were cyclized to 4,5-dihydrobenz[h]imidazo[1,2-c]quinazoline derivatives, i.e.,11,13,15-triazasteroidal compounds (IV, V, VI, VIII, and IX) using phosphoryl chloride or acetic anhydride. An oxygen function could be introduced at C-l of 4,5-dihydrobenz[h]imidazo[l,2-c]quinazoline, i.e., C-17 of the 11,13,15-triazasteroidal compounds.

    Original languageEnglish
    Pages (from-to)30-36
    Number of pages7
    JournalChemical and Pharmaceutical Bulletin
    Volume33
    Issue number1
    DOIs
    Publication statusPublished - Jan 1 1985

    Keywords

    • N-(4-benzo[h]quinazolinyl)amino acid
    • acetic anhydride
    • amino acid
    • benz[h]imidazol[1,2-c]quinazoline
    • cyclization acetylation
    • phosphoryl chloride

    ASJC Scopus subject areas

    • Chemistry(all)
    • Drug Discovery

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