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Syntheses totales de la (+) iso β-peltatine

✍ Scribed by Eric Brown; Michel Loriot; Jean-Pierre Robin


Publisher
Elsevier Science
Year
1982
Tongue
French
Weight
240 KB
Volume
23
Category
Article
ISSN
0040-4039

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✦ Synopsis


a-Hydroxyalkylation of a B-(2-alkoxy 3,4-methylenedioxy benzyl)-y-butyrolactone (17 or 25) with 3,4,5-tnmethoxybenzaldehyde or synngaldehyde ?& followed by cycll-__ __ satlon, afforded good yields of the corresponding (2) isopeltatins Les peltatines a kt B, respectivement 1 et & ont @te isol&es pour la premiere fols de Podophyllumpeltatum (1) Ces deux lignanes sont cytotoxiques et antitumoraux (2) L' ether m@thyllque 3 de la (-+) 8-peltatine a et@ is016 plus recemment de la plante mexicaine Bursera fagaroides (3) Ces compos@s se caractensent par une Jonction lactone trans, le substltuant phenyle etant pseudo-axial.


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