...版) 关键字: 钼合8-羟基喹啉;取代基;环氧化;催化剂[gap=912]Key words: 8-hydroxyquinoline molybdenum; substituent group; epoxidation; catalyst...
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Flavanone can form 6,8-substituent group exchanged isomers with 2'- hydroxy chalcone as intermediates. Flavanone can be oxidated intoβ-hydroxy chalcone in the role of oxidase. β-hydroxy chalcone can form cyclized 2-hydroxy flavanone and 2-hydroxy flavanone dehydrated into flavone.
在对黄酮类化合物生源关系研究的基础上,对本属植物中黄酮的生物转化进行了探讨,得到这些化合物的生物转化途径,即:二氢黄酮以2′-羟基查尔酮为中间体形成6,8位取代基互换的异构体;二氢黄酮在氧化酶作用下氧化形成β-羟基查尔酮;β-羟基查尔酮环合形成2-羟基二氢黄酮;2-羟基二氢黄酮脱水形成黄酮。
参考来源 - 活性先导化合物毛叶假鹰爪素C衍生物的设计与合成·2,447,543篇论文数据,部分数据来源于NoteExpress
The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.
作者认为影响聚合物等规度的因素主要是取代基的极性效应。
The experiments show that large substituent group on Cp is favorable to the formation of CTSs with low ratio of ferrocenyl:POM.
比较发现,茂环上的取代基越大越有利于二茂铁基阳离子与多阴离子之比小的电荷转移盐的形成。
The results show that the formation of dimers depends on the nature of substituent group, dielectric constant of solvent, and concentration.
结果表明二聚体的形成取决于取代基团的性质以及溶剂的介电常数与溶液浓度。
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