Zm. Xiong et al., AN EFFICIENT STEREOCONTROLLED SYNTHESIS OF (-)-10-EPI-5-BETA,11-DIHYDROXYEUDESMANE AND (-)-4,10-EPI-5-BETA,11-DIHYDROXYEUDESMANE, Tetrahedron : asymmetry, 9(9), 1998, pp. 1525-1530
A concise and efficient synthesis of (-)-10-epi-5 beta, 11-dihydroxyeu
desmane 1 and (-)-4,10-epi-5 beta, 11-dihydroxyeudesmane 2, via (-)-10
-epi-gamma-eudesmol 5, was accomplished starting from (+)-dihydrocarvo
ne. The salient feature of our synthesis is the utilization of substra
te-directable epoxidation and homogeneous hydrogenation to control the
stereochemistry at the C-4 and C-5 positions of the title compounds.
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