从棕色固氮菌孢囊中分离和鉴定几种独特的脂质。
Isolation and characterization of several unique lipids from Azotobacter vinelandii cysts.
作者信息
Su C J, Reusch R N, Sadoff H L
出版信息
J Bacteriol. 1981 Jul;147(1):80-90. doi: 10.1128/jb.147.1.80-90.1981.
Unique cyclic compounds were found in the lipid fraction of Azotobacter vinelandii cysts. In addition to two major molecular species which had already been identified, 5-n-alkylresorcinol and its galactoside derivative, five other molecular species (two alkyl side chain homologs of each) were isolated, and their structures were established by infrared, ultraviolet, nuclear magnetic resonance, and mass spectroscopy. These 10 compounds were 6-n-heneicosylresorcylic acid methyl ester and 6-n-tricosylresorcylic acid methyl ester, 5-n-(2-hydroxy)heneicosylresorcinol and 5-n-(2-hydroxy-tricosylresorcinol, 5-n-heneicosyl-4-acetylresorcinol and 5-n-tricosyl-4-acetylresorcinol, 6-n-heneicosyl-4-hydroxypyran-2-one and 6-n-tricosyl-4-hydroxypyran-2-one, and 6-(2-oxotricosyl)-4-hydroxy-pyran-2-one and 6-(2-oxopentacosyl)-4-hydroxypyran-2-one.
在棕色固氮菌孢囊中发现了独特的环状化合物。除了已鉴定出的两种主要分子种类，即5 - n - 烷基间苯二酚及其半乳糖苷衍生物外，还分离出了其他五种分子种类（每种各有两个烷基侧链同系物），并通过红外光谱、紫外光谱、核磁共振光谱和质谱确定了它们的结构。这10种化合物分别是6 - n - 二十一烷基间苯二酚酸甲酯和6 - n - 二十三烷基间苯二酚酸甲酯、5 - n -（2 - 羟基）二十一烷基间苯二酚和5 - n -（2 - 羟基）二十三烷基间苯二酚、5 - n - 二十一烷基 - 4 - 乙酰基间苯二酚和5 - n - 二十三烷基 - 4 - 乙酰基间苯二酚、6 - n - 二十一烷基 - 4 - 羟基吡喃 - 2 - 酮和6 - n - 二十三烷基 - 4 - 羟基吡喃 - 2 - 酮，以及6 -（2 - 氧代二十三烷基）- 4 - 羟基 - 吡喃 - 2 - 酮和6 -（2 - 氧代二十五烷基）- 4 - 羟基吡喃 - 2 - 酮。
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