Structure and absolute stereochemistry of pinguisone
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 1875-1878
- https://doi.org/10.1039/p19740001875
Abstract
Structure (1)(4β,4aβ,7β,7aβ-tetramethyl-4,4a,6,7,7a,8-hexahydrocyclopenta[f]benzofuran-5-one) is definitively assigned to pinguisone on the basis of its mass and 13C n.m.r. spectra; X-ray analysis of its p-bromobenzylidene derivative (4) establishes the absolute stereochemistry of the compound. The simultaneous formation of both (Z)- and (E)-p-bromobenzylidene derivatives (3) and (4) from (1) is discussed.Keywords
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