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Communication | Regular issue | Vol 1, No. 3, 1973, pp.251-256
Published online, 1st January, 1970
DOI: 10.3987/R-1973-03-0251
A New Route to Pyrrolo[2,3-b]indoles

Noboru Shoji, Yoshikazu Kondo,* and Tsunematsu Takemoto

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


The cyclization of 3-hydroxy-3-2’-hydroxyiminooxindoles (1) to pyrrolo[2,3-b]indole derivatives (2-5) has been described. In the resulting products, 4 and 5 were first isolated five-membered invertomers.