SCHEDULED MAINTENANCE
The relative and absolute configurations of the two chiral centres of herqueinone (3) have been determined by X-ray crystallographic analysis; a biosynthetic mechanism is proposed for the formation of the centre at C(2′) the stereospecificity of which is predetermined by the configuration of an intermediate containing an inverted isoprene unit at a transitory C(5) chiral centre.
A. Quick, R. Thomas and D. J. Williams, J. Chem. Soc., Chem. Commun., 1980, 1051 DOI: 10.1039/C39800001051
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