Add time:08/23/2019         Source:sciencedirect.com

The conjugate addition–alkylation to 5H-furan-2-one followed by cyclization and controlled epimerizations have been applied to the synthesis of new furo- and thieno-lignan analogues. Podophyllotoxin and thuriferic acid heteroanalogues have been obtained by this methodology, as representative members of these families.

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