Synthesis of the carbazole alkaloids hyellazole and 6-chlorohyellazole and related derivatives
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 5,p. 579-587
- https://doi.org/10.1039/p19940000579
Abstract
We describe a new seven-stage synthesis of the carbazole alkaloids hyellazole and 6-chlorohyellazole, which proceeds via thermal cyclization of the 3-(buta-1,3-dienyl)indoles 7ab and 7bb, prepared from the condensation products of indole-2,3-diones 1a, b and the 3-methyl-4-phenylbut-3-en-2-one 2b. This procedure was also used to prepare related 3-methoxy-1-phenylcarbazole derivatives.Keywords
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