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Communication | Regular issue | Vol 23, No. 6, 1985, pp.1381-1384
Published online, 1st January, 1970
DOI: 10.3987/R-1985-06-1381
Formation of Novel Heterocycles, [1]Benzothiopyrano[3,4-b]pyrrole Derivatives by Unusual Cyclixation Reaction of 1-Benzothiopyran-1-oxide Derivatives

Mikio Hori,* Tadashi Kataoka, Hiroshi Shimizu, Eiji Imai, Noriyuki Iwata, Norihiko Kawamura, and Masayasu Kurono

*Department of Pharmacognosy, Gifu College of Pharmacy, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan

Abstract

Treatment of 1-benzothiopyran-1-oxide derivatives (12a,b) with sulfuryl chloride and then with sodium hydride afforded a novel type of derivatives of [1]benzothiopyrano[3,4-b]pyrrole.