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我们已经遇到过一系列有特效的烯醇等当物。We have already met one series of specific enol equivalents.

本发明涉及已知弹性蛋白酶抑制剂的酰化烯醇衍生物。This invention relates to acylated enol derivatives of known elastase inhibitors.

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在许多醛和酮中酮基都是最主要的组分。The keto form predominates in many aldehydes and ketones, the enol form in phenols.

一化合物，在溶液中存在酮式与烯醇式互变异构体，普通液相柱中能否分开？It does not make any sense that trying to separate the tautomers of enol and ketone.

在与二氯卡宾加成反应中，我们还研究了它们之间的相对反应速率。The relative reaction rate of adding dichlorocarbene to enol phosphates was studied.

此螯合反应是由酮—烯醇互变异构平衡过程和酯交换反应组成。This complex reaction is characterized by a keto enol tautomerism equilibrium and ester exchange reaction.

而由混合酸酐或双烯酮代替酰氯，中间体也可能是烯酮或烯醇5。Similarly, using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 may be obtained.

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热力学参数的计算表明，从烯醇式到双酮式构型的转变是一个吸热过程。The calculation of the thermodynamic parameters shows that the transformation from enol to keto form is endothermic process.

另外，用TDDFT方法计算得到的醇式和酮式结构的吸收光谱说明实验室提出的醇式和酮式互变异构反应的光致变色机理是合理的。Furthermore, the absorption spectrum of keto form and enol form obtained from TDDFT theory prove that the hypothesis of photoisomerization from enol form to keto form is reasonable.

本发明茼蒿素类化合物及其合成方法与应用，该化合物具有烯醇醚-螺环缩酮-缩醛和不饱和侧链。The invention relates to garland chrysanthemum extract compounds, and a synthesis method and application thereof. The compounds have enol ether-spiro ketal-acetals and unsaturated side chains.