The total synthesis of leukotrienes has been achieved starting from butadiene by a palladium-catalyzed telomerization at room temperature. A Sharpless catalytic asymmetric epoxidation generated the asymmetric centers with >94% ee. Simple transformations of the key intermediate 15 produced the leukotrienes LTA4 methyl ester (4), LTC4 (1), LTD4 (2) and LTE4 (3), as well as (14S,15S)-LTA4 methyl ester (24)
The preparation of octahydro leukotrienes C, D, and E via a stereoselective sulfenyllactonization reaction
作者:Robert N. Young、William Coombs、Yvan Guindon、Joshua Rokach、Diane Ethier、Ronald Hall
DOI:10.1016/s0040-4039(01)92385-8
日期:1981.1
Sulfenyl halides derived from the N-trifluoroacetamido methyl ester derivatives of cysteine, cysteinyiglycine and glutathione react stereoselectively with (5E)- and (5Z)-eicosenoic acids to provide, after separation of diastereomers and hydrolysis of the protecting groups, the fully saturated analogues of leukotrienes LTC4, LTD4, and LTE4.