苘麻油脂甲酯化产物的气相色谱-质谱研究

目的:研究苘麻油脂的化学成分。方法:运用GC-MS技术对其化学成分进行分析和鉴定。结果:已经鉴定组分共10个,其中含量较高的有:8,11-十八碳二烯酸甲酯(37.33%)、十二烷二酸二甲酯(8.51%)、(Z)-十八碳-9-烯酸甲酯(7.64%)、(Z,Z)-9,12-十八碳酸甲酯(2.03%)和(Z)-十八碳-6-烯酸甲酯(1.20%)。结论:本法技术简单易行,操作简便,本研究为苘麻油脂的深入开发提供了基础。

First Asymmetric Synthesis of (-)Methyl 2, 2-dimethyl-3-hydroxychromanyl-6-formate

Aim To synthesize naturally occurring (-) methyl2,2-dimethyl-3-hydroxychromanyl-6-formate. Methods Sharpless' asymmetric dihydroxylation wasemployed to construct the 3-hydroxychroman. Results First asymmetric synthesis of (-) methyl 2,2-dimethyl-3-hydroxychromanyl-6-formate (1) was accomplished starting from methyl 4-hydroxy-benzoate(2), and the absolute configuration was established. Conclusion A useful method for constructingchiral 3-hydroxychroman by employing Sharpless' asymmetric dihydroxylation is achieved.