Vetiver essential oil was obtained from roots of Vetiveria zizanioides by hydrodistillation method. The unique feature of oil is the presence of antipodal terpenoids of which khusinol may be mentioned as representative. Khusinol, a white crystalline solid (m.p. 87 °C) isolated by column chromatography from vetiver oil was subjected to chemical transformations to afford khusinol oxides, cadina-4a,10b-diol and trans-calamenene derivatives. The structures of khusinol and its derivatives were elucidated using spectroscopic techniques.
香根草精油是通过
水蒸气蒸馏法从
香根草的根中提取的。这种精油的独特之处在于其中含有对映
萜类化合物,其中以库
辛醇为代表。库
辛醇是一种白色结晶固体(熔点87°C),通过柱色谱法从
香根草油中分离出来,经过
化学转化后得到库
辛醇氧化物、cadina-4a,10b-diol和反式-calamenene衍
生物。库
辛醇及其衍
生物的结构通过光谱技术得以阐明。