2 resultados para Pinene methoxylation

em Chinese Academy of Sciences Institutional Repositories Grid Portal


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本文以杉科(Taxodiaceae)五属六种植物--杉木属(Cunninghamia)的杉木(C. lanceolata)、水松属(Glyptostrobus)的水松(G. pensilis)、落羽杉属(Taxodium)的池杉(T. ascendens)、水杉属(Metasequoia)的水杉(M. glyptostroboides)、柳杉属(Cryptomeria)的柳杉(C. fortunei)及日本柳杉(C. japonica)为材料,进行了以下研究: 1、用气相色谱-质谱-计算机联用法,在统一条件下测定了上述植物叶的精油成分及各成分百分含量。共检测到七十余种成分,包括α-蒎稀(α-pinene)、龙脑(borneol)、乙酸松油酯(terpinyl acetate)、杜松烯(cadinene)等十六种共有成分和其它分布各异的成分。 2、用柱层析和薄层层析法从杉木中提取、分离、纯化了5个双黄酮成分,鉴定为一类3'-8"联接的化合物,分别为穗花杉双黄酮(amentoflavone)、长叶世界爷双黄酮(sequoiaflavone)、银杏双黄酮(gingetin)、榧黄素(kayaflavone)和金松双黄酮(sciadopitysin)。 3、用薄层层析法检测上述5个双黄酮成分在6种植物中的分布,发现每一植物均含有这五个已知化合物。 4、根据以上结果并结合文献资料,讨论了以下问题: 1)、杉科植物精油成分及其组成特点; 2)、杉科植物双黄酮成分及其分布规律; 3)有关柳杉与日本柳杉关系的化学证据; 4)有关水杉归属的化学证据。

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The composition of the leaf oils from seven populations of J. sabina L., one population of Juniperus sabina var. arenaria (E. H. Wilson) Farjon were examined for their geographic variation. In addition, the leaf oils of J. chinensis L. and J. davurica Pall. were compared to J. sabina. Juniperus sabina var. arenarla, the sand loving juniper, oil was found to be very similar to that of J. davurica, Mongolia, and J. sabina, on sand dunes in Mongolia. This suggests that J. sabina var. arenaria might be conspecific with J. davurica. Farjon's move (2001) of J. sabina var. arenaria out of J. chinensis is supported. Considerable differentiation was found in populations of J. sabina from the Iberian peninsula. Cedrol, citronellol, safrole, trans-sabinyl acetate, terpinen-4-ol and beta-thujone were found to be polymorphic in several populations.