查询词典 cedrol

A certain reference value was indicated in this experiment for industry synthesis of cedrol methyl ether by sodamide method.

本实验对甲基柏木醚氨基钠法工业化生产具有一定的参考价值。

In this paper, the cedrol methyl ether was synthesized by sodamide method.

本文采用氨基钠法合成甲基柏木醚。

The fir essential oil was extracted from fir root by steam distillation method, from which cedrol was extracted, and then, cedrol methyl ether was synthesized based on cedrol.

以杉木根为原料通过水蒸气蒸馏法提取杉木精油，从杉木根精油中精制提取柏木脑，再以柏木脑为原料合成甲基柏木醚。

Two steps were included in this reaction, first, sodium alkoxide was synthesized by th reaction between sodamide and cedrol, then cedrol methyl ether was synthesized by methylation reaction between sodium alkoxide and dimethyl sulfate.

反应分两步，首先氨基钠与柏木脑反应生成醇钠，然后醇钠与硫酸二甲酯进行甲基化反应生成甲基柏木醚。

Based on groups of single factor experiments, the yield could reached to 88.8% with the conditions: sodamide: cedrol :dimethyl sulfate = 1.6:1:0.9, refluxed 2h in first step reaction, and reacted at room temperature 1h after instillation of dimethyl sulfate, followed refluxed 1h in the second steps.

通过多组单因素实验发现氨基钠：柏木脑：硫酸二甲酯的摩尔比为1.6：1：0.9，第一步反应条件控制在回流2h，第二步反应先室温（25℃）滴加硫酸二甲酯后反应1h，再回流反应1h，得率可达88.8%。

The relative contents of thujopsene and cedrol were higher in P.orientalis extracted by SFE and MSD methods.No monoterpenes was found in the compounds extracted by SFE and SDE,and the wood resin acids were the major compounds in the compounds extracted by SE.

改装简易蒸馏样品和超临界CO_2萃取物以及并时蒸馏萃取物中含量最高的组分是罗汉柏烯和柏木脑，但是超临界CO_2萃取物中未检测出单萜；索氏提取法样品中含量最高的组分为非挥发性的树脂酸类物质。

There were the same of fifty-seven components in the two oils.The most relative contents was α-Cedrol (micro-milling of Poria Cocos 7.936%)、trans-Nerolidol(ordinary pulverization of Poria Cocos 8.657%).

茯苓2种粉末挥发油成分中，含有57种相同成分，其中含量最高的分别为α-柏木醇（茯苓超微粉7.936%）、反橙花叔醇（茯苓普通粉8.657%）。

Furthermore, the antifungal effect of the two-part heartwoods nearby sapwood was better than that of the heartwood nearby the pith. 14 kinds of chemical components were identified from the heartwood extractives by GC/MS, most of which are terpenoids and their derivatives, and the content of thujopsene is the highest (25.564%), cedrol (19.743%) is second only to that of thujopsene, 24 kinds of chemical components were identified from the dichloromethane extractives, and the highest component is also thujopsene (15.429%).

气质联机技术对正己烷和二氯甲烷提取物分析鉴定表明：侧柏心材正己烷提取物中有14种化合物，大部分化合物属于萜烯类物质及其衍生物，最高含量化合物为罗汉柏烯(25.564%)和雪松醇(19.743%)；侧柏心材二氯甲烷提取物中鉴定出24种化合物，最高含量化合物也为罗汉柏烯(15.429%)。

ResultsOne hundred and thirty-one kinds of chemical constituents in micro-milling of Poria Cocos were separated ; of which sixty-seven compounds representing 51.145% of the oil were characterized. Relative contents that were more than 2% were determined as Nonanal 2.058%,Camphor 2.401%,2,3-dimethyl Decalin 3.819%,trans-Nerolidol 2.266%,Farnesol 3.322%,α-Cedrol 7.936%.

结果茯苓超微粉中分离出131个成分，鉴定出67个化学成分，占挥发油总量的51.145%，其中相对百分含量大于2%的分别确定为壬醛Nonanal 2.058%；樟脑Camphor 2.401%；2，3-二甲基萘烷 2，3-dimethyl Decalin 3.819%；反橙花叔醇trans-Nerolidol 2.266%；金合欢醇 Farnesol 3.322%；α-柏木醇α-Cedrol 7.936%。

ASES is 59% identical to Artemisia cyclase cDNA clone cASC125, 50% identical to epi-cedrol synthase from A. annua, 48% identical to amorpha-4, 11-diene synthase from A. Annua, 39% identical to the 5-epi-aristolechene synthase from tabacco, 38% identical to vetispiradiene synthase from H. Muticus, 41% identical to the δ-cadinene synthase from cotton. The coding region of cDNA was cloned into procaryotic expression vector pET30a and overexpressed in E. coli BL21 (DE3). The cyclase proteins extracted from bacterial culture were found largely in the insoluble protein fraction. The tissue specific expression patterns were analyzed by RT/PCR.

克隆的倍半萜合酶氨基酸序列与烟草马兜铃烯合酶、莨菪岩兰螺旋二烯合酶、棉花杜松烯合酶的一致性分别为39％，38％和41％；与青蒿柏木脑合酶、紫穗槐二烯合酶和一个推测的倍半萜合酶克隆cASC125的一致性为50％，48％和59％。cDNA编码区序列被克隆进原核表达载体pET-30a，并在大肠杆菌BL21（DE3）中诱导表达，但过量表达的蛋白主要是以不溶性蛋白形式存在。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。