METHODS FOR CONVENIENT ASYMMETRIC SYNTHESIS OF C9-SUBSTITUTED STEROID-LIKE COMPOUNDS
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Issued Date -
Jun 6, 2024
app pub date -
Mar 17, 2022
filing date -
Mar 19, 2021
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Abstract
The present disclosure relates to stereodefined polycyclic (e.g., tetracyclic) compounds that contain quaternary centers at one or multiple ring fusions, synthetic methods for preparing such compounds. In one aspect, the present disclosure relates to preparing a C9-alpha-substituted or a C9-beta-substituted compound (steroid numbering), the method comprising the steps of providing a tertiary allylic substrate and performing a regio- and stereoselective cyclization reaction to form a C9-C10 bond and to set a quaternary center at C9.
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