作者:Joel M. Harris、George A. O'Doherty
DOI:10.1016/s0040-4039(02)01866-x
日期:2002.11
applying the Sharpless catalytic asymmetric dihydroxylation to vinylfuran. The resulting diols are produced in high enantioexcess and can be stereoselectively transformed into α,β-unsaturated-δ-lactones via a short highly diastereoselective oxidation and reduction sequence. A Wittig olefination reaction was used to introduce the side chain in either cis or trans form that was further elaborated into
柔性的对映选择性路线可实现高度官能化的α,β-不饱和δ-内酯的合成,可合成苯甲醛固体C.此方法源自(S)-乳酸,并通过将Sharpless催化不对称二羟基化反应应用于乙烯基呋喃而获得了不对称性。所产生的二醇以高对映体过量产生,并且可以通过短的高度非对映选择性氧化和还原序列立体选择性地转化为α,β-不饱和-δ-内酯。使用维蒂希(Wittig)烯烃化反应以顺式或反式形式引入侧链,将其进一步精制为苯甲醛固体C.