Abstract:Leptosperol B, possessing a unique octahydronaphthalene
framework
and 5-substituted aromatic ring, was isolated from the leaves of Leptospermum scoparium in 2020. The asymmetric total
synthesis of leptosperol B was accomplished in 12 steps from (−)-menthone.
The efficient synthetic scheme involves regioselective hydration and
stereocontrolled intramolecular 1,4-addition to construct the octahydronaphthalene
skeleton, followed by the introduction of the 5-substituted aromatic
ring.
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