查询词典 endomorphism ring

The theoretical properties of BTATz were estimated by a B3LYP method based on 6-31G basis set. The stable geometric configuration and bond order were obtained. The vibrational frequencies, IR spectrum and thermodynamics properties under different temperatures were obtained from vibrational analysis, and the relationship between temperature and thermodynamics properties was deducted. Pyrolysis mechanism of BTATz was discussed, and the transition state and activation energy of ring opening reaction of the tetrazole were deducted.

用B3LYP方法，在6-31G基组水平上对其性能进行了计算，得到了其稳定的几何构型和键级；在振动分析的基础上求得体系的振动频率、IR谱及不同温度下的热力学性质，并得到了温度对热力学性能影响的关系式；探讨了其热解机理，推断出四唑环开环时的过渡态和活化能。

The target compound was cut off from the middle of the two benzene ring of Biphenyl Tetrazole and the key step was accomplished through Suzuki Coupling reaction.

第二部分：抗高血压药物——缬沙坦的新合成路线研究我们分别以对溴甲苯，对溴苄溴和对溴苯甲醛为起始原料分三条路线完成了缬沙坦的全合成。

A compound of formula wherein R1 is hydrogen, halo or methoxy; R2 is hydrogen, halo, methyl, ethyl or methoxy; R3 is carboxy, tetrazolyl, or -CONHSO2R where R is methyl, ethyl, phenyl, 2,5-dimethylisoxazolyl or trifluoromethyl; T is -CH2- or -SO2-; and ring A is 3-chlorophenyl, 4-chlorophenyl, 3-trifluoromethylphenyl, 3,4-dichlorophenyl, 3,4-difluorophenyl, 3-fluoro-4-chlorophenyl, 3-chloro-4-fluorophenyl or 2,3-dichloropyrid-5-yl; or a pharmaceutically acceptable salt or prodrug thereof, as well as pharmaceutical compositions containing them are described and claimed.

本发明涉及一种式化合物，其中R 1 是氢原子、卤素或甲氧基；R 2 是氢原子、卤素、甲基、乙基或甲氧基；R 3 是羧基、四唑基或－CONHSO 2 R 4 ，其中R 4 是甲基、乙基、苯基、2，5－二甲基异∴唑基或三氟甲基；T是－CH 2 －或－SO 2 －；环A是3－氯苯基、4－氯苯基、3－三氟甲基苯基、3，4－二氯苯基、3，4－二氟苯基、3－氟－4－氯苯基、3－氯－4－氟苯基或2，3－二氯吡啶－5－基；或其药用允许的盐或前药，还包括所阐述和要求权利的含有它们的药用组合物。

For many of the fittings, a hole or ring must first be cut in a flat metal sheet prior to the fixation of a tubular or conical piping member thereover.

对于很多的设备，一个大洞或环形必须首先被削减在一个单位金属板前以固定的管状或圆锥管涌会员thereover 。

Connection of this intermediate with other amino acid residues followed by elaboration of thiazoline ring with Kelly\'s methodology, and macrocyclization at the N-Me-IIe-Pro site afforded apratoxin A and its oxazoline analogue.

然后，我又合成了另外三个Dtena片段类似物，并按照邹斌博士的路线分别再经过六步反应合成了另外三个Apratoxin A的噁唑啉环类似物。

The ligand of HL3 differs from HL1 and HL2 in having an ethyl group not methyl group on the triazole ring and having a thienyl group on the substituted amino group, meanwhile there are two kinds of 3 molecules in the crystal structure.

在化合物3中配体与化合物1和化合物2的不同，同时其一个结构单元中还存在两个结构几乎相同的分子，这两个分子只在键长、键角上有轻微差别。

Its molecular structure js beta-methyl indole-3-propionic acid, containing no thiopyran ring, which is a characteristic moiety of Chuanxinmycin.

脱硫创新霉素是创新霉素经过脱硫反应生成的一个创新霉素衍生物，其分子结构为β-甲基吲哚丙酸，不含创新霉素所特有的噻喃环。

Products mainly include: traction rope series, neck ring series, thoracodorsal series, pet bags, pet clothing line, pet nest series dog series models, as well as factory developed its own "treasure Sophie" series, such as shampoo.

产品主要有：牵引绳系列，脖圈系列，胸背系列，宠物包，宠物衣服系列，宠物窝系列，模特狗系列以及本厂自行研制开发的&宝柔&香波系列等。

Now I finally can thow the ring into your face.

现在， 我终于可以当着你的面把这戒指摔在你脸上了。

Culms with a white or brown tomentose ring at each node; nodes ± elevated

在每个节点的秆具一枚白色的或棕色绒毛戒指；节多少隆起 5

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。