ZACA-lipase-catalyzed acetylation tandem process has been shown to proceed satisfactorily with either TBS-protected 4-penten-1-ol or 3-buten-1-ol to provide the corresponding enantiomerically pure (R)-2-ethyl-1-alkanols. Either (R)-5 or (R)-6 was converted to 3 in seven steps. The other fragment 4 was synthesized in nine steps from (-)-(S)-citronellol. Conversion of 3 and 4 into 99% pure fluvirucinine
已显示ZACA-
脂肪酶催化的乙酰化串联过程可通过TBS保护的
4-戊烯-1-醇或
3-丁烯-1-醇令人满意地进行,以提供相应的对映体纯的(R)-2-乙基-1-链烷醇。通过七个步骤将(R)-5或(R)-6转换为3。另一个片段4是从(-)-(S)-
香茅醇以九步合成的。通过酰胺化环闭合复分解反应,可在四个步骤中将3和4转化为99%的纯
氟病毒精A1,最长线性序列的总产率为34%(13个步骤)。