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The Total Synthesis of (-)-7-Deoxyloganin via N-Heterocyclic Carbene Catalyzed Rearrangement of α,β-Unsaturated Enol Esters
被引:97
|作者:
Candish, Lisa
[1
]
Lupton, David W.
[1
]
机构:
[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia
关键词:
DIELS-ALDER REACTIONS;
NATURALLY-OCCURRING IRIDOIDS;
DIASTEREOSELECTIVE CONJUGATE ADDITION;
ASYMMETRIC TOTAL-SYNTHESIS;
WITTIG-HORNER REACTION;
STEREOSELECTIVE-SYNTHESIS;
ENANTIOSELECTIVE SYNTHESIS;
GRIGNARD-REAGENTS;
MICHAEL REACTIONS;
SECOIRIDOIDS;
D O I:
10.1021/ol101983h
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The diastereoselective N-heterocyclic carbene (NHC) catalyzed rearrangement of alpha,beta-unsaturated enol ester (S)-2b has been used to assemble dihydropyranone (S)-3b, a material embodying the bicyclic core of the iridoid family of natural products. Elaboration of this intermediate, by chemoselective reduction followed by stereoselective beta-glycosylation, has allowed the total synthesis of (-)-7-deoxyloganin (1) to be achieved in four subsequent steps.
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页码:4836 / 4839
页数:4
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