A new synthesis of (±) loliolide [(6S,7 aR)-6-hydroxy-4,4,7a-triméthyl-5,6,7,7a-tetrahydrobenzofuran-2 (4H)-one] was achieved from pure homogeranic acid in a stereospecific fashion. The intermediate ethylenic lactone was converted to the racemate of loliolide dihydrololiolide thereby providing a simple route to these compounds.
从纯天竺葵中获得了新的(±)
氯碘内酯[(6S,7 aR)-6-羟基-4,4,7a-三苯甲基-5,6,7,7a-四氢
苯并呋喃2(4H)-一个]的合成。酸以立体定向方式存在。中间体烯属内酯被转化为loliolide二氢loliolide的外消旋体,从而为这些化合物提供了简单的途径。