Heterolignanolides. Furo- and thieno-analogues of podophyllotoxin and thuriferic acid
摘要:
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. (C) 2001 Elsevier Science Ltd. All rights reserved.