Total Syntheses of Four Stereoisomers of 4α-Hydroxy-1β,7β-peroxy- 10β<i>H</i>-guaia-5-ene
作者:Gonzalo Blay、Begoña Garcia、Eva Molina、José R. Pedro
DOI:10.1021/ol0511023
日期:2005.7.1
[reaction: see text]. The first total syntheses of four stereoisomers of 4alpha-hydroxy-1beta,7beta-peroxy-10betaH-guaia-5-ene are reported starting from the readily available (+)-dihydrocarvone. These compounds have been synthesized from dienes (-)-isoguaiene and (-)-10-epi-isoguaiene by tandem ene hydroperoxylation-[4 + 2] cycloaddition with O(2) followed by selective reduction. The structure of
[反应:请参见文字]。从易于获得的(+)-二氢香芹酮开始报道了4α-羟基-1β,7β-过氧-10βH-愈创木-5-烯的四个立体异构体的第一批合成。这些化合物是通过二烯加氢过氧化-[4 + 2]与O(2)环加成,然后进行选择性还原,由二烯(-)-异双胍和(-)-10-表-异双烯合成的。已经确认了从多毛冬瓜分离的天然4α-羟基-1β,7β-过氧-10βH-guaia-5-ene的结构。