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■ Short Step Syntheses of Indolo[2,3-a]carbazoles Carrying an Alkyl, Allyl, or a Glycosyl Group at the 11-Position and a Novel 6,7-Dihydro-13H-cyclopentano[mn]indolo[3,2-c]acridine Derivative

Masanori Somei,* Fumio Yamada, Jun Kato, Yoshiaki Suzuki, and Yoshinori Ueda

*Faculty of Pharmaceutical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-0934, Japan

Abstract

Novel 1-alkyl-, 1-allyl-, and 1-β-glycosyl-2,2’-biindolyls are prepared. Their Diels-Alder reaction produced 11-alkyl-, 11-allyl-, and 11-β-glycosylindolo[2,3-a]carbazoles. Formation of a novel 6,7-dihydro-13H-cyclopentano[mn]indolo[3,2-c]acridine derivative is also reported.