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Efficient total syntheses of the naturally occurring, potent antibiotic compounds (−)‐crinipellin A and (−)‐crinipellin B are described. The key advanced intermediate, a fully functionalized tetraquinane core, was constructed by a novel thiourea/palladium‐catalyzed Pauson–Khand reaction. This intermediate can serve as a common intermediate for the collective total synthesis of other members of the...
Durchgemischt: Die goldkatalysierte Titelreaktion überführt symmetrische und unsymmetrische Propargylester mit anhängenden Cyclohexadienon‐Ringen unter milden Bedingungen in Cyclohexenone oder Cyclohexanone mit einem quartären Zentrum in γ‐Stellung, wobei mehrere Atome vollständig stereokontrolliert verschoben werden.
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