Enantioselective Total Syntheses of (−)-7βH-Eudesmane-4α,11-diol and (+)-ent-7βH-Eudesmane-4α,11-diol
摘要:
The syntheses of (-)-7 beta H-eudesmane-4 alpha,11-diol (2) and (+)-ent-7 beta H-eudesmane-4 alpha,11-diol (ent-2) were carried out starting from (-)- and (+)-dihydrocarvones. As a result, the structure, including absolute configuration, of the naturally occurring eudesmane-4,11-diol isolated from Pluchea arguta was determined to be (+)-ent-7 beta H-eudesmane-4 alpha,11-diol (ent-2).
The syntheses of (-)-7 beta H-eudesmane-4 alpha,11-diol (2) and (+)-ent-7 beta H-eudesmane-4 alpha,11-diol (ent-2) were carried out starting from (-)- and (+)-dihydrocarvones. As a result, the structure, including absolute configuration, of the naturally occurring eudesmane-4,11-diol isolated from Pluchea arguta was determined to be (+)-ent-7 beta H-eudesmane-4 alpha,11-diol (ent-2).
Synthetic approaches to 10-epieudesmane sesquiterpenes. A synthesis of intermedeol