The [5-7-6-3] tetracyclic core of premyrsinane diterpenes was convergently synthesized the stereoselective three-component coupling of a 2-propenyl unit, an enone, and an aldehyde, followed by the relay ring-closing metathesis with conformation control of the substrate to construct the 7-membered ring.
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http://dx.doi.org/10.1039/d2ob02210a | DOI Listing |
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