TOTAL SYNTHESIS OF (5R,6S)-DIHETES, (5S,6S)-DIHETES AND (11R,12S)-DIHETES FROM TRICARBONYL ETA-4-BUTADIENYL) IRON(0) COMPLEXES

被引:0
|
作者
LELLOUCHE, JP [1 ]
GIGOUBARBEDETTE, A [1 ]
GREE, R [1 ]
机构
[1] ENSCR,SYNTHESES & ACTIVAT BIOMOLEC LAB,CNRS,URA D1 467,F-35700 RENNES,FRANCE
来源
关键词
TRICARBONYL (ETA-4-BUTADIENYL) IRON COMPLEXES; OSMYLATION; (5,6)-DIHETES; (11,12)-DIHETE; (14,15)-DIDEHYDRO (11,12)-DIHETE;
D O I
暂无
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The total synthesis of (5R,6S)-, (5S,6S)- and (11R,12S)-DIHETEs are described starting from the two chiral tricarbonyl (eta4-butadienyl)iron complexes (-)-(2R,5S)-12 and (+)-(2S,5R)-13. This new synthetic approach shows an efficient use of these chiral bifunctionalized iron complexes for the preparation of polyhydroxylated polyenes. The key step of the sequence, ie, the osmylation of a free double bond close to the organonietallic unit, has been studied in detail. The addition Of OsO4 is diastereospecific for the Z-alkenes and highly diastereoselective for the E-alkenes: in both cases, it occurs anti to the Fe(CO)3 group.
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收藏
页码:605 / 624
页数:20
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