A formal total synthesis of (±)-clavicipitic acid was achieved in five steps from indole-3-carboxaldehyde. Syntheses of (±)-4-cyano-, (±)-4-methyl-, and (±)-4-hydroxymethyl-6-(2-methyl-1-propen-1-yl)- 3,4,5,6-tetrahydro-1H-azepino [5,4,3-cd] indoles are also reported
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Somei et al. (1994) studied this question.
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