ENANTIOSELECTIVE TOTAL SYNTHESIS OF BETA-ELEMENE AND FUSCOL BASED ON ENANTIOCONTROLLED IRELAND-CLAISEN REARRANGEMENT

被引:61
作者
COREY, EJ
ROBERTS, BE
DIXON, BR
机构
[1] Department of Chemistry, Harvard University, Cambridge
关键词
D O I
10.1021/ja00106a023
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The potent antiinflammatory agent precursor (+)-fuscol (2) has been synthesized using the chiral reagent 1 to effect the key step, the completely enantioselective Ireland-Claisen rearrangement of ester 3 to acid 4a. Conversion of 4a to the corresponding aldehyde 4c, cation-olefin cyclization to 5a, and deoxygenation produced (+)-beta-elemene (6). (+)-Fuscol (2) was synthesized from 6 via intermediates 7 and 8.
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页码:193 / 196
页数:4
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