SCHEDULED MAINTENANCE
Unambiguous syntheses of cis- and trans-1,2,3,4,4a,9,10,10a-octahydro-5,8-dimethylphenanthrenes enabled stereochemical assignment for the thermodynamically stable isomer of 1,2,3,4,4a,9,10,10a-octahydro-5,8-dimethyl-4,9-dioxophenanthrene, described recently. Supplementary support was obtained from n.m.r. studies.
S. Bien, U. Michael and L. (. Zamir, J. Chem. Soc. C, 1967, 115 DOI: 10.1039/J39670000115
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