双环的

基本解释 (translations)

dicyclic  ·  amphicyclic

与双环的相关的网络例句 [注：此内容来源于网络，仅供参考]

Through using Mythylene DinitrAmine as rude product, the knowledge of its reaction properties in different phases have been increased, Through using Mythylene BisAcetAmide as rude product, intermediates which include 1,3-Diacetyl -4,5-dihydroxy -1,3-diazacyclopentane and 1,3-Diacetyl- 4,5-diacetoxy-l,3-diaza cyclopentane have been obtained. 2,4,6,8-tetracetyl- 2,4,6,8-tetraaza bicyclo[3,3,0]octane which can be used to produce Bicyclo-HMX by nitrolysis was also produced. Through using Mythylene BisFormAmide as rude product, intermediates which include 1,3-Diformyl-4,5-dihydroxy- 1,3-diazacyclopentane and 1,3-Diformyl- 4,5-diacetoxy-l,3-diazacyclopentane have been abtained.

以亚甲基二硝胺为初始原料，加深了对亚甲基二硝胺在不同反应相反应特征的认识；以亚甲基二乙酰胺为初始原料，制备了中间体1，3-二乙酰基-4，5-二羟基-1，3-二氮杂环戊烷和1，3-二乙酰基-4，5-二乙酰氧基-1，3-二氮杂环戊烷，最终制备了可被直接硝解为双环HMX的2，4，6，8-四乙酰基-2，4，6，8-四氮杂双环[3，3，0]辛烷；以亚甲基二甲酰胺为初始原料，制备了中间体1，3-二甲酰基-4，5-二羟基-1，3-二氮杂环戊烷和1，3-二甲酰基-4，5-二乙酰氧基-1，3-二氮杂环戊烷。

Constituting dicycle; 2. region selectively reducing six-membered ring ketocarbonyl radical; 3. introducing 7alpha-hydroxy group; 4. Aldol reaction to introduce side chain and obtain 8alpha-hydroxy group; 5. oxidizing the position 7 hydroxy group into ketone; 6. turning the configuration of the position 7 hydroxy group; 7. glycosidating the position 7 hydroxy group; and 8. eliminating protecting group to obtain the target compound.

该方法包括如下步骤：(1)双环的构建；(2)区域选择性还原六元环酮羰基；(3)7α-羟基的引入；(4)Aldol反应引入侧链，同时得到8α-羟基；(5)7位羟基氧化为酮；(6)7位羟基构型的翻转；(7)7位羟基的糖苷化；(8)脱除保护基得到目标化合物。

Refers to the port in an FDDI topology which connects the incoming primary ring and the outgoing secondary ring of the FDDI dual ring. This port is part of the dual attachment station or a dual attachment concentrator.

指FDDI拓扑中的端口，连接FDDI双环结构中的输入主环和输出辅环。A端口是双连接站点或者双附加配置集中器的一部分。

On the other hand, when the radical center is located at the 2-position of bicyclic cyclobutylcarbinyl radicals, ring opening pathway is favored unless a radical-stabilizing substituent is placed in the cyclobutyl ring at the bridge position.

另一方面，当自由基中心位于双环环丁基甲基自由基的2-位时，开环过程占主导地位，但是在双环的桥位上存在能够稳定自由基的取代基时，重排主要进行扩环反应。

When the radical center is located at the bridge methyl group, ring expansion is the favored rearrangement pathway unless a radical-stabilizing substituent is placed in the cyclobutyl ring adjacent to the bridge methyl group.

当自由基中心位于双环的桥甲基时，扩环过程占主导地位，但是与桥甲基相邻的环丁基上存在能够稳定自由基的取代基时，重排以开环为主。

III. Studies on the total synthesis of macrophllin type of bicyclo[3, 2, 1] octanoid neolignans ( C-4': endo ) The first total synthetic route of macrophllin type of bicyclo[3, 2, 1]octanoidneolignans ( C-4': endo ) was established based on the rearrangement ofbenzofuranoid and bicyclo[3, 2, 1]octanoid neolignans.

三、Macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成研究利用氢化苯骈呋喃类新木脂素和双环[3，2，1]辛烷类新木脂素的重排关系，首次建立了macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成路线。

After an investigation on the epoxidation of 33 and subsequent oxane ring opening, the 〓,〓-dihydroxyl group was successfully introduced, in accordance with the diaxial rule.

考察了33的环氧化和环氧开环反应，利用环氧开环的双直立规律，成功引入了符合设计要求的〓双羟基。

Second, residues in the reactive site of the inhibitor were replaced by the consensus substrate recognition sequence of furin, namely, Arg at P_1, Lys at P_2, Arg at P_4 and Arg at P_6. In addition, the P_7 residue Asp was substituted with Ala to avoid possible electrostatic interference with furin inhibition. Finally, the extra N and C terminal residues beyond the doubly conjugated disulfide loops were further truncated. However, all resultant synthetic peptides were found to be temporary inhibitors of furin and kexin during a prolonged incubation, with the scissile peptide bond between P1 and P'1 cleaved to different extents by the enzymes.

高活性、低分子量的furin酶抑制剂有可能发展成为新型的抗细菌内毒素和抗病毒感染的药物，我们以绿豆胰蛋白酶抑制剂Lys片段长链22肽为模板，设计了一系列能抑制furin和kexin活性的突变体，采用如下三种方法逐步优化：一、去除Lys片段长链三对二硫键中的一对，用Ser替换Cys，减少可能存在的二硫键错误配对；二、抑制剂的活性中心根据furin底物的专一性逐步改变，即P1、P2、P4和P6位分别变为Arg、Lys、Arg和Arg，同时为了避免P7 Asp和P6 Arg之间可能存在的相互作用，将P7位Asp替换为Ala；三、将两对二硫键形成的双环的外面5个氨基酸残基去除。

The Consulate General of China, Chairman of the chinese consolidated benevolent association, The Assembly State of New York senator, The City of New York office of President Borough of Manhattan, Office of the Brooklyn Borough President, The Council of The City of New York, The Vice President New York Area of Ritz-Carlton , joining to our Association 1st Anniversary Celebration.

曾代表我酒店协会在庆奥运活动表演陈氏太极双环的胡老师是明门高徒，为了发扬光大现订于每星期日在布碌仑亲自教授传技，凡有兴趣参加者请与Steve Chung 347-423-1430联络。繁荣华埠总会会长田士锐公布今年中秋节於九月十四日在华埠举办儿童花灯文艺节，届时有多项节目让孩子们娱乐，兴趣者留意新消息。

From the potential energy profile, it can be predicted that, the dominant channel of this reaction consists of three steps: the two reactants first form a three-membered ring intermediate (INT1) through a barrier-free exothermic reaction of 19.2 kJ/mol; three-membered ring intermediate (INT1) isomerizes to a four-membered ring silylene(P2) via the transition state (TS2) with an energy barrier of 22.8 kJ/mol; four-membered ring silylene(P2) further reacts with ethene(R2) to form a silicic bis-heterocyclic compound (P3), which is also a barrier-free exothermic reaction of 132.2 kJ/mol.

用CCSD//MP2/6-31G*方法研究了单重态二甲基亚烷基硅烯与乙烯生成硅杂双环化合物环加成反应的机理，根据该反应的势能面可以预言，该反应的主反应通道有三步组成：第一步是两反应物（R1， R2）首先生成了一三元环中间体（INT1），它是一无势垒的放热反应，放出的能量为19.2 kJ/mol；第二步是三元环中间体(INT1)经过渡态TS2异构化为了四元环硅烯（P2），其势垒为22.8 kJ/mol；第三步是四元环硅烯（P2）进一步与乙烯(R2)反应生成了硅杂双环化合物（P3），该反应也是一无势垒的放热反应，放出的能量为132.2 kJ/mol。

与双环的相关的网络解释 [注：此内容来源于网络，仅供参考]

dinuclear aromatics：双环芳香族化合物

dint 压痕 | dinuclear aromatics 双环芳香族化合物 | dinuclear 双核的

dinuclear aromatics：双环芳香族化合物 英语课堂

dint 压痕 | dinuclear aromatics 双环芳香族化合物 英语课堂www.englishtang.com | dinuclear 双核的

bicyclist：骑脚踏车者, 骑自行车的人

bicyclic | 双环的 两个轮子的 自行车的 | bicyclist | 骑脚踏车者, 骑自行车的人 | bicycloheptanol | 双环庚醇

dicotyledon：双子叶植物 雙子葉植物

dichotomy method 二分法 二分法 Y | dicotyledon 双子叶植物 雙子葉植物 Y | dicyclic 双周期的,双环的 複周期性; 雙環的 Y

Double Loop Clusters：双环集群

Fringes And Frontal 条纹和额叶 | Double Loop Clusters 双环集群 | Hidden Comb 暗藏的梳子

bicyclic：二轮生的,二环型的,双环型的

bicuspid valve 尖瓣 | bicyclic 二轮生的,二环型的,双环型的 | Bidder's ganglia 毕德氏神经节

bicyclic：双环的 两个轮子的 自行车的

bicyclic hydrocarbon | 二环烃 | bicyclic | 双环的 两个轮子的 自行车的 | bicyclist | 骑脚踏车者, 骑自行车的人

dicyclic：双周期的,双环的 複周期性; 雙環的

dicotyledon 双子叶植物 雙子葉植物 Y | dicyclic 双周期的,双环的 複周期性; 雙環的 Y | diel 一昼夜(的) 日周性的; 一晝夜 Y

dicyclic：双环的

dicyclic ring 双环核 | dicyclic 双环的 | dicyclo-hexyl phthlate 苯二甲酸二环己酯

dicyclic ring：双环核

dicyclic hydrocarbons 双环烃类 | dicyclic ring 双环核 | dicyclic 双环的