Intermediates in the Synthesis of (+)-Grandisol. III. (1S,5R)-2,5-Dimethyl-1-(phenylsulfonyl)bicyclo[3.2.0]hept-2-ene

In the title compound, C₁₅H₁₈O₂S, the cyclopentene ring is in an envelope conformation and the cyclobutane ring is puckered. The phenylsulfonyl and the junction methyl group are cis to each other.

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