烯酮类

Generally believed that 8-iso-amyl alkenyl and the flavonoid glycoside Epimedium is right for cardiovascular and immune activity of the major components, and has anti-tumor activity.

一般认为具有8-异戊烯基的黄酮及其苷类是淫羊藿对心血管及免疫促进活性的主要成分，并具有抗肿瘤活性。

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The results showed that SFE-CO_2 was the ideal method to extract volatile oils from lotus leaves. GC-MS was applied to isolate and analyze the components of extracted volatile oils. 76 components were detected, among which SD and SE detected 23 components respectively, while SFE-CO_2 detected 52 components. The main ingredients were terpenes, alcohols, esters, ketones and alkyls, etc.

并通过GC-MS联用技术，对提取得到的挥发油组分进行了分离分析，共检出76种成分，其中水蒸气蒸馏法和有机溶剂提取法分别检出23种成分，超临界萃取所得荷叶挥发油检出52种成分，主要为萜烯、醇、酯和酮、烷类化合物等。

A facile one-step method waspresented for the synthesis of N-fluoroalkanesulfonyl amidines 〓 inmoderate to good yield from the reaction of azides, ketones or aldehydes, andsecondary amines at room temperature.

在和无官能团取代的烯胺化合物的反应中，它发生了烷基迁移过程，而且利用该反应我们实现了由酮或醛，二级胺和叠氮一锅法合成脒类化合物〓。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。