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Paper | Special issue | Vol 42, No. 1, 1996, pp.251-263
Published online, 1st January, 1970
DOI: 10.3987/COM-95-S15
Synthesi of Aminobenzo[b]pyrrolizinone and Aminobenzo[b]indolizinone Derivatives

Masanao Taga, Hisao Ohtsuka, Isao Inoue, Takayuki Kawaguchi, Sumihiro Nomura, Koichiro Yamada, Tadamasa Date, Hajime Hiramatsu, and Yasuhiko Sato

*Organic Chemistry Research Laboratory, Tanabe Seiyaku Co.Ltd., 2-2-50, Kawagishi, Toddda, Saitama 335-8505, Japan

Abstract

The fused tricyclic indole derivatives (4a and 4b-1~4b-7) possessing an amino function on the benzo[b]pyrrolizinone or the benzo[b]indolizinone skeleton were synthesized via intramolecular reductive cyclization and Curtius rearrangement, and these compounds exhibited anti-anoxia activity.