SCHEDULED MAINTENANCE
Stereoselective construction of a steroidal side chain containing a 26–27 cyclopropane ring, compound 22, has been achieved by an intramolecular cyclisation of the corresponding β-methylsulfonyloxy cyanide 16, derived from a chiral cyclopentane derivative. Compound 22 has been further utilised in the synthesis of the naturally occurring steroid petrosterol 3.
T. Honda, M. Katoh and S. Yamane, J. Chem. Soc., Perkin Trans. 1, 1996, 2291 DOI: 10.1039/P19960002291
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