查询词典 geranyl

The modified Marchand method is further improved, a more higher yield of geranyl sulfone is obtained from geraniol.

对改良的Marchand法进一步改进，提高了从香叶醇一步合成香叶基砜的收率。

Methods: In the presence of hydrochloric acid or nitric acid, geranyl sulfone was prepared from geraniol in isopropyl alcohol or THF under reflux conditions for 18 h or 28 h, respectively.

以异丙醇或THF为溶剂，盐酸或硝酸为催化剂，香叶醇与苯亚磺酸钠回流反应18或28 h得香叶基砜。

Methoxycoumarin-3-carboxylic acid geranyl ester was synthesized from geraniol and 8-methoxycoumarin-3-carboxylic acid and its structure was characterized by IR, HRMS, 1H NMR and 13C NMR.

采用酰氯酯化法，以8-甲氧基－香豆素－3-甲酸与香叶醇为原料合成了8-甲氧基－香豆素－3-甲酸香叶酯，经IR，HRMS，1H NMR，13C NMR等鉴定，证实了其结构。

The results show that: 27 compounds were identified at 600℃, and most of them were alkenes, alkanes, acids, alcohols and phenolic substances; geraniol was identified, and its relative content was 3.6, which shows that geranyl 8-methoxycoumarin-3-carboxylic acid ester can release a certain amount of geraniol at smoke temperature; geranyl 8-methoxycoumarin-3-carboxylic acid ester can improve and modify the flavor, enhance the notes of sweet aroma and bean aroma, and reduce the biting taste of cigarette smoke.

结果表明，600℃时，8-甲氧基－香豆素－3-甲酸香叶酯的热解产物中共鉴定出27种成分，主要为烯类、烷类、酸类、醇类、酚类；鉴定出香叶醇，且相对峰面积3.6，说明8-甲氧基－香豆素－3-甲酸香叶酯能在卷烟燃吸温度下释放出一定量的香叶醇；8-甲氧基－香豆素－3-甲酸香叶酯具有改善和修饰卷烟香气，增加甜韵和豆香香韵，减轻刺激性的作用。

Miscellaneous compounds: Examples of this fourth group include vanillin, cinnamic acid,and geranyl formate.

其它化合物：第四类的例子有香草醛、肉桂酸和甲酸香叶酯。

Objective: To improve the one stage synthetic method of geranyl sulfone catalyzed by acid.

目的：研究酸催化一步制备香叶基砜的合成方法。

Ginkgo leaf shape has also been Geranyl on both sides of the sub-point of impact.

银杏的叶形，还受到叶基两边分枚角度的影响。

The thermal degradation mechanism of geranyl-β-D-glucopyranoside was discussed according to the results.

根据实验结果，对香叶基-β-D-吡喃葡萄糖苷的裂解机理进行了初步探讨。

The inhibitory potency of geranyl gallate is as about six times as that of lauryl gallate on mushroom tyrosinase. Lauryl gallate was determined to be an uncompetitive inhibitor while geranyl gallate belongs to be a mixed-type inhibitor.

没食子酸香叶酯对蘑菇酪氨酸酶的抑制作用比没食子酸十二烷基酯更强，没食子酸十二烷基酯表现为反竞争性抑制类型，而没食子酸香叶酯表现为混合型抑制类型。

Chapter 2 has analysized the conversly synthetic means of solanesol and designed novelly synthetic routes of solanesol and key intermediate Chapter 3 has summarized the preparation of trans-3-methyl-4-hydroxy (bromo-2-butenyl oxy methyl benzene In chapter 4 ,a novel technology of important intermediate(all trans-8-bromo geranyl acetate),which is suitable for industrial procedure , was found .meanwhile,an another new way has been invented ,of which the key intermediate (all trans-8-hydroxy geranyl acetate) has been produced.

第二部分分析了茄尼醇的逆合成方法，设计了一条适合于合成茄尼醇的合成路线及其重要中间体的合成路线。第三部分研究了重要中间体[Trans-3-甲基-4-羟基-2-丁烯基乙酰基(苄基，2，3-二氢吡喃基)醚]的合成新方法，找到了一条适合于工业化生产的制备反式-3-甲基-4-羟基-2-丁烯基苄基醚的新方法。第四部分研究了重要中间体[-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯、-3，7-二甲基-8-溴-2，6-辛二烯-1-醇乙酸酯]的合成新方法，找到了一条适合于工业化生产的制备它们的新方法；同时研究了一条制备-3，7-二甲基-8-羟基-2，6-辛二烯-1-醇乙酸酯的另一新方法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。