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Synthese du (±) loliolide par polycyclisation de l'acide homogeranique.

✍ Scribed by Francis Rouessac; Henri Zamarlik; Noupko Gnonlonfoun


Book ID
104217345
Publisher
Elsevier Science
Year
1983
Tongue
French
Weight
187 KB
Volume
24
Category
Article
ISSN
0040-4039

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✦ Synopsis


A new synthesis of (+) loliolide [(6S,7 aR)-6-hydroxy-4,4,7a-trimethyl-5,6,7,7a-te- trahydrobenzofuran-2 (4H)-one1 was achieved from pure homogeranic acid in a stereospecific fashion. The intermediate ethylenic lactone 5 was converted to the racemate of loliolide via dihydrololiolide 5 thereby providing a simple route to these compounds. Le (-) loliolide (ou digiprolactone) 1, identifie dans divers vegetaux (1,2,3) et dont la configuration absolue a et@ determinee (4,5) a fait l'objet jusqu'a ce jour de trois syntheses au depart soit de la trimethyl-2,2,6 cyclohexanone (6), soit de l'isophorone (7) ou soit du B-cyclocitral (8).


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