ring substituted
英 [rɪŋ ˈsʌbstɪtjuːtɪd]
美 [rɪŋ ˈsʌbstɪtuːtɪd]
网络 环取代
双语例句
- It is worth while to note that the steroidal glycoside possessing an aromatic ring substituted alkanoyl group at its glucose moiety was found for the first time in fungi.
值得注意的是，这种糖片段上有芳环取代的烷酰氧基基团的麦角甾烷型甾体糖苷为真菌中首次报道。 - The porphyrin ring orientation is determined by porphyrin and the substituted hydrophilic groups.
环的取向由环本身及环上的亲水取代基来确定。 - Study on ring opening polymerization of 2 substituted 4 methylene 1,3 dioxolane
2-位取代的4-亚甲基-1,3-二氧环戊烷开环聚合反应研究 - Tumour chemotherapy ⅺⅹ. synthesis of compounds related to 10-hydroxy-decenoic acid and a number of ring substituted cinnamic acids
肿瘤的化学治疗ⅪⅩ.王浆的有效成分&10-羟基-癸烯酸的相似化合物及若干苯环取代肉桂酸的合成 - Structure Characterization of Ring-substituted Polyaniline's Derivatives
聚苯胺衍生物的结构表征 - According to the difference of active order of aryl ring substituted by chlorine, bromine and iodine, chloromethyl ethyl ether, bromine and iodine are respectively used in the PS substitution under the different catalytic conditions.
根据氯、溴、碘芳环取代活性顺序的不同，分别用氯甲基丁基醚、溴和碘在不同的催化条件下进行聚苯乙烯卤代反应。 - IR spectra reveal that T-O-T antisymmetric stretch and ring stretch shift to lower wavenumber side with increasing the W content, this fact coincides with that the Si-O bond is substituted by longer W-O bond in the zeolite framework.
红外光谱研究表明，T-O-T反对称伸缩振动吸收峰和环振动吸收峰均随产物中W含量的增加而向低波数方向移动，这与分子筛骨架中W对Si的取代相一致。 - -Acetyl-7-methylamino tropone reacted with N-bromosuccinimide ( NBS) to give a product that tropone ring substituted by bromine.
2乙酰基7甲胺基草酮与N溴代丁二酰亚胺（NBS）反应，得到了革酮环上被溴取代的产物。 - Progress in the Investigations on Structures of Ring-substituted Phthalocyanines
取代酞菁金属配合物的结构研究进展 - The third position of the benzene ring was substituted by the electron acceptor groups, the electronic transmission performance was enhanced, while it was substituted by the electron donor groups, the electronic transmission performance was reduced.
当其苯环上3位被拉电子基团取代后，其电子传输性能提高；而被给电子基团取代后，电子传输性能降低。 - The results show that the herbicidal activity decreases as the hydrogen atoms of the alkoxy group at 4 position of the pyrimidine ring are substituted by alkyl, alkoxy groups or fluorine atoms.
结果表明，嘧啶环上烷氧基中的氢原子被烷基、烷氧基及氟原子等基团取代后，磺酰脲分子的除草活性降低。 - In chapter two, ortho C-H bonds in the carboxylic acid ring of N-alkyl and N-aryl substituted benzamides was successfully and selectively activated and were functionalized by olefins to give five-membered lactam.
N-烷基和N-芳基取代的苯甲酰胺羧酸环邻位的C-H键能够选择性的发生活化，被烯烃官能化后生成五元环的内酰胺。 - Further study indicate that when the 3,4 position of benzene ring are substituted with methoxy group, the homodimers could be transformed to benzofurans by carbon-carbon bond cleavage in the presence of ferric chloride.
进一步的研究发现，当二聚体的主体苯环的3,4位同时有甲氧基取代时，该二聚体可以在三氯化铁作用下发生碳碳键的断裂并进一步环化生成取代的苯并呋喃化合物。 - The position of tetrahydrofuran ring and its adjacent substituted hydroxy, the number and position of substituted hydroxyl have a certain impact of anti-tumor activity of ACGs in vitro.
四氢呋喃环及其相邻的取代羟基位置、取代羟基个数及羟基位置不同对其体外抗肿瘤活性有一定的影响。 - Aza-sugars in which oxygen in the ring has been substituted for a nitrogen atom are one of the very important mimics of sugars.
氮杂糖（azasugar）是一类糖环上氧原子被氮取代的糖类衍生物。 - With pymetrozine as lead compounds, lead aryl-isoxazole ring substituted the pyridine ring in pymetrozine, designed and synthesized a new compound.
以吡蚜酮为先导化合物，引芳基异恶唑环替代吡蚜酮的吡啶环，设计并合成了新化合物。