1)β-dihydroagarofuranβ-二氢沉香呋喃
1.The Circular Dichroism of Some β-Dihydroagarofuran Polyesters;几个β-二氢沉香呋喃多醇酯的CD谱研究
2.In order to find new active compounds,the structure of 1β,2β,4α,6α,8β,9α,13-hepthydroxy-β-dihydroagarofuran was simplified to be 1β,4α,6α,9α-tetrahydroxy-2β,12-ether-β-dihydroagarofuran,and seven new dihydroagarofuran ether analogues were synthesized using 1β,4α,6α,9α-tetrahydroxy-2β,12-ether-β-dihydroagarofuran as staring materials.提取物水解产物中的1β,2β,4α,6α,8β,9α,13-七羟基-β-二氢沉香呋喃为起始原料,先经过甲基磺酸酯保护后再用氢化铝锂还原,得到一结构新颖的双呋喃二氢沉香呋喃倍半萜(化合物S),并以此为原料设计合成了7个未见文献报道的双呋喃二氢沉香呋喃醚类衍生物(a～g),其结构经核磁共振谱、红外光谱、高分辨质谱等方法确证。
3.Based on the data in literatures and our research results in recent years, the paper dis cussed the α,β,γeffects on the 13C NMR and stereochemisry of β-dihydroagarofuran when the parent skeleton was substituted by acyloxy or hydroxy groups at the pdgitions C2,C4,C6,C8 and C13 which would be very useful for the research on the new chemical structures of this kind of compounds.本文结合作者近年的研究，讨论了β-二氢沉香呋喃倍半萜的13CNMR取代规律及其有关的立体化学问题，这对于进一步研究该类天然产物的化学结构有重要参考价值。
英文短句/例句
1.Synthesis and Insecticidal Activity of the Hepthydroxy-β-dihydroagarofuran Derivatives;七羟基-β-二氢沉香呋喃衍生物的合成及其杀虫活性
2.Fractionation and structure identification of β-dihydroagarofuan polyolesters from Celastrus angulatus苦皮藤β-二氢沉香呋喃多元醇酯类化合物分离及结构解析
3.Synthesis and Insecticidal Activity of the Dihydroagarofuran Derivatives;双呋喃二氢沉香呋喃衍生物的合成及其杀虫活性
4.Synthesis of α-Furanacrylic Esters with Monometallic Sodium Orthophosphate as Catalyst磷酸二氢钠催化合成α-呋喃丙烯酸酯
5.Gas-phase Cyclodehydration of 1,4-Butanediol into Tetrahydrofuran1,4-丁二醇气相环化脱水合成四氢呋喃
6.Fast increase in demand of tetrahydrofuran and poly-tetrahydrofuran;四氢呋喃和聚四氢呋喃需求快速增长
7.3,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate３,３－二氢－２,２－二甲基－７－苯并呋喃基－甲基氨基甲酸酯
8.Study on Immobilized β-D-fructofuranosidase by Cross-linking with Glutaraldehyde戊二醛交联法固定化β-D-呋喃果糖苷酶的研究
9.~1H NMR Investigations of Supramolecular Complex between β-cyclodextrin and Tetrahydrofuran;超分子络合物β-环糊精——四氢呋喃的核磁共振氢谱分析
10.Absorption and transportation characteristic of dihydrofurocoumarins from Rhizome et Radix Notopterygii in a model of Caco-2 cell monolayers羌活中二氢呋喃类香豆素在人源肠Caco-2细胞单层模型的吸收转运研究
11.The Ring-opening Polymerization of PDO with PTHF Acts as Macroinitiator;聚四氢呋喃引发对二氧环己酮开环聚合的研究
12.Electrospinning of polyurethane solution based on tetrahydrofuran/N,N-dimethyl formamide基于四氢呋喃/二甲基甲酰胺的聚氨酯静电纺丝
13.Synthesis, Characterization and Catalytic Activity of Divalent Lanthanide Complexes with Furfuryl-and Tetrahydrofurfuryl-Functionalized Indenyl Ligands;含呋喃、四氢呋喃取代茚基二价稀土配合物的合成、表征与催化活性研究
14.The Studies on the Syntheses of 1, 4-Benzodioxane Neolignan Derivatives and Dihydrobenzofuran Neolignan Derivatives with Biological Activities;生理活性苯并二噁烷和苯并二氢呋喃新木脂素衍生物合成
15.The catalysis of big pore strong acid resin for1,4- butanediol dehydration to tetrahydrofuran is investigated.考察了大孔强酸性树脂对1,4丁二醇脱水制四氢呋喃的催化作用。
16.Stereoselective and Enantioselective Synthesis of Trans-2, 5-disubstituted Tetrahydrofurans反式-2，5-二取代四氢呋喃的立体选择性和对映选择性合成
17.The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated.考察了大孔强酸性树脂对1,4 丁二醇脱水制四氢呋喃的催化作用。
18.Solubility of 1,2-Ethylenediamine、Pyridine Triethylamine、Tetrahydrofuran in Water and Technological Process Research of Tetrahydrofuran;乙二胺、三乙胺、四氢呋喃、吡啶在水中的溶解度及其工程治理
相关短句/例句
β-dihydroagarofuran sesquiterpenoid polyol estersβ-二氢沉香呋喃
1.A majority of β-dihydroagarofuran sesquiterpenoid polyol esters with insecticidal activity were reviewed which were isolated from Celastrus angulatus.)中分离得到的具有杀虫活性成分的β-二氢沉香呋喃为骨架的多元醇酯类化合物。
3)β-dihydroagarofuran sesquiterpeneβ-二氢沉香呋喃倍半萜
4)β-dihydroagarofuran polyol estersβ-二氢沉香呋喃多元酯
5)dihydroagarofuran二氢沉香呋喃
1.Their structrues were determined as dulcitol (Ⅰ),1α,2α,4β,6β,8α,9α,13-heptahydroxy-β-dihydroagarofuran(Ⅱ);β-sitosterol(Ⅲ);9β-benzoxy-1α,8β.采用 5种溶剂对苦皮藤假种皮进行了系统提取 ,在灵敏的活性追踪指导下 ,分别从苦皮藤假种皮体积分数 2 5 %和 5 0 %的乙醇提取物中分离、鉴定了 4个化合物 :卫矛醇 (化合物 )、1α,2 α,4β,6 β,8α,9β,13-七羟基 -二氢沉香呋喃 (化合物 )、9β-苯甲酰氧基 - 1α,8β,13-三乙酰氧基 -二氢沉香呋喃 (化合物 )、β-谷甾醇 (化合物 ) ;其中化合物 有杀菌活性 ,化合物 有杀虫活性 ,化合物 为在苦皮藤中首次分离鉴定。
2.To further veritify the insecticidal activity of Dihydroagarofuran compounds, the toxicity action against Mythimna separata and Aedes albopictus were investigated under the laboratory conditions, and their effects on activities of Na~+-K~+-ATPase and CarE were also determinated.卫矛科植物的主要杀虫活性成分是以二氢沉香呋喃为骨架的多元醇酯和生物碱。
6)β dihydroagarofuran sesquiterpene polyolβ二氢沉香呋喃倍半萜多醇
延伸阅读
沉香【通用名称】沉香【其他名称】沉香 沉香 拼音名：Chenxiang 英文名：LIGNUM AQUILARIAE RESINATUM 书页号：2000年版一部-146 本品为瑞香科植物白木香Aquilaria sinensis (Lour.) Gilg 含有树脂的木材。全 年均可采收，割取含树脂的木材，除去不含树脂的部分，阴干。 【性状】 本品呈不规则块、片状或盔帽状，有的为小碎块。表面凹凸不平，有刀 痕，偶有孔洞，可见黑褐色树脂与黄白色木部相间的斑纹，孔洞及凹窝表面多呈朽木状 。质较坚实，断面刺状。气芳香，味苦。 【鉴别】 (1) 本品横切面：射线宽1～2列细胞，充满棕色树脂。导管圆多角形， 直径42～128μm，有的含棕色树脂。木纤维多角形，直径20～45μm,壁稍厚，木化。木 间韧皮部扁长椭圆状或条带状，常与射线相交，细胞壁薄，非木化，内含棕色树脂；其 间散有少数纤维，有的薄壁细胞含草酸钙柱晶。 (2) 取[浸出物]项下醇溶性浸出物，进行微量升华，得黄褐色油状物，香气浓郁； 于油状物上加盐酸1 滴与香草醛少量，再滴加乙醇1～2滴，渐显樱红色，放置后颜色加 深。 【浸出物】 照醇溶性浸出物测定法项下的热浸法（附录Ⅹ A）测定，用乙醇作溶 剂，不得少于15.0％。 【炮制】 除去枯废白木，劈成小块。用时捣碎或研成细粉。 【性味与归经】 辛、苦，微温。归脾、胃、肾经。 【功能与主治】 行气止痛，温中止呕，纳气平喘。用于胸腹胀闷疼痛，胃寒呕吐 呃逆，肾虚气逆喘急。 【用法与用量】 1.5 ～4.5g，入煎剂宜后下。 【贮藏】 密闭，置阴凉干燥处。
