豆叶九里香挥发油化学成分的研究

The essential oil from the branches and leaves of Murraya euchrestifolia Hayata was examined by GC, fractional distillation, column chromatography and GC/MS. Two main components were isolated from the essential oil by using fractional distillation and column chromatography on silica ogel and were identified as limonene (56.10%) and perillaldehyde (34.10%) respectively by IR, NMR and MS spectra. Seven other components were isolated in small amounts and identified as n-propyl-benzene, aromadendrene, elemol, 1-keto-4-hydroxy-decalin, 1-cycloheptyl-1-methyl-ethanol, myrtenal and eicosane.In addition, another seven compounds in this essential oil were identified as α-pinene, camphene, β-pinene, pulegone, perillylalcohol, dihydrocarveyl acetate and cis-carveyl acetate.     

反相高效液相色谱法测定非诺贝特(Procetofene)

非诺贝特(Fenoibrate)又名普鲁脂芬(Procetofene),化学名为2-(4-对氯苯甲酰)苯氧基-2-甲基丙酸异丙酯,是目前较为理想的降血酯药。据报道,它的药效比安妥明强,毒副作用小。关于非诺贝特的含量测定,国内上海药品标准采用水解后酸碱剩余滴定法,但此法专一性不强。本文用反相高效液相色谱法分离并用对照品鉴别,测得非诺贝特合成产品的杂质是4-氯-4-羟苯酰苯(Ⅰ)和2-(4-对氯苯甲酰)苯氧基-2-甲基丙酸(Ⅱ);以4—氯苯     

豆叶九里香挥发油化学成分的研究

豆叶九里香(Murraya euchrestifolia Hayata)系云香科九里香属植物,产在广西、云南等地。民间用其枝叶入药,有祛风活血、消炎止痛作用。我所药理研究室抗菌试验表明豆叶九里香挥发油对流感杆菌、枯草杆菌、肺炎球菌等11种菌株有明显的抑制作用,其中对流感杆菌(1:1600)抑制作用最强。广西北流县医药研究所用豆叶九里香油做成外用油膏治疗感     

岗松挥发油的色谱—质谱分析

岗松(Backea frutescens Linn.)为桃金娘科岗松属植物,在我国广西、广东、江西、福建等地均有野生,民间用以治肠炎腹泻、脚癣和皮肤搔痒,并用于治蛇虫咬伤。我所药理室发现岗松油对阴道滴虫和伤寒杆菌、副伤寒杆菌、宋内氏痢疾杆菌、弗氏痢疾杆菌等均有抑制作用,经过41例阴道滴虫炎临床验证,取得较好的疗效。     

福建砂仁挥发油的品质评价

本文应用色谱/质谱联用技术,对福建长太砂(种仁、叶)及混淆品建砂——华山姜、山姜的挥发油,进行化学成分的提取分离和鉴定,并与缩砂进行比较。从缩砂油中鉴定了33个成分,长太砂油中鉴定了29个成分,长太砂叶油中鉴定了23个成分,华山姜油中鉴定了39个成分,山姜油中鉴定了36个成分,并分别表示出各成分的百分含量。对主要成分的鉴定还应用气相色谱法,以标准物质对照R_t,红外光谱,质谱等法进行佐证。实验除客观评价五种挥发油质量外,并为代用问题提供实验依据。     

西洋参茎叶中挥发油成分的研究

本文报告从北京怀柔县农田栽培的西洋参茎叶中提取出挥发油,收率为0.25%;并用气相色谱—质谱—计算机联用法进行了挥发油成分鉴定。共鉴定出27种化合物,其中醇和酯类8种。另外,有两种成分与西洋参根中挥发油成分相同。