内酯酸的

Polyfluoroalkyl iodides could react with unsaturated olefin acids in the presence of sodium dithionite by radical addition to give adducts. It was found that these adducts could form polyfluoroalkyl substituted γ or δ-lactones due to intramolecular nucleophilic substitution in the alkali solution.

研究发现：多氟烷基碘化物在连二亚硫酸钠存在下与不饱和烯酸经自由基加成得到的产物，能在碱性条件下进行分子内亲核取代反应形成五元或六元环的含氟内酯类化合物。

A scalable synthesis of the common eastern hemisphere lactone- 6 for construction of the nodulisporic acids has been achieved.

伸缩合成一个共同的东半球内酯6 nodulisporic酸的施工已经完成。

A novel and sensitive thin-layer chromatography method for specific and simultaneous detection of both lactone form Monacolin K and acid form Monacolin K is developed in this study.

通过实验筛选出了适于特异性的同步检测酸式和内酯式莫奈呵啉K的薄层色谱法。

The purpose of this thesis was to characterize the involvement of Brassinosteroids in proline accumulation.

本论文的研究目的在于了解植物激素油菜素内酯在拟南芥脯氨酸积累中的作用。

The effects of different catalyst preparation methods and conditions of catalytic oxidation on the yield of glucuronic acid were studied.

现行的葡萄糖醛酸内酯工业生产方法是以淀粉为原料的硝酸氧化法，即淀粉经硝酸氧化、加压水解，在酸性条件下

The total yield of glucuronic acid and glucuronolactone reached 60% at optimum conditions, and the catalyst had good selectivity.

在Pd负载量为1%、温度70 ℃、pH值为9的条件下，葡萄糖醛酸及内酯的总收率达到60%，反应选择性良好。

Glucopyrone at room temperature for Ihr. Then it is leached, cooked for 5 min in 6 times boiled water immediately, followed by cooking at 90癈 for 25 min, during which mixture of sucrose fatty acid ester and monoglycerid must be added to the cooking water.

适宜的工艺参数为：将较低直链淀粉含量(＜16％)的粳米，用常法水洗后，以0.2％三聚磷酸钠与0.4％葡萄糖酸-δ-内酯混和溶液于室温浸泡1hr，沥水后投入6倍量沸水中煮制5min，再于90℃恒温水浴加热25min。

Qinghao acid, Qinghao B, Scopoletin, Casticin and Chrysosplenol D had some antimalarial activities on P. berghei. Even when the dosage was up to 500 mg/kg/d, the maximal inhibition rate was only 59%, which is less active than QHS. Therapeutic effect of different ingredients of A.

青蒿酸、青蒿乙素、东莨菪内酯、青蒿黄酮1、青蒿黄酮2 5种成份对鼠疟均有不同程度的抑制作用，但剂量高达500mg/kg/d时，抑制率最高也仅达到59%，远低于QHS的疗效。

This paper reviews the recent progress on the Chinese syntheic research of marine natural products according to type classifications: marine cyclopeptides, cembranes, cembrenss, cembranolides, quinolone derivativcs, triacetonamine and subergorgic acid analogues.

本文综述中国海洋天然产物合成研究的最新进展，包括海洋环肽、西松烷和西松烷型二萜内酯、喹啉酮衍生物和三丙酮胺以及柳珊瑚酸类似物等。

Results:The optimum extraction process was adding 10 times amount of 80% alcohol,refluxing and extraction for 3 times,1h each time.

结果 ：因素A、D对阿魏酸的含量有显著影响。因素A、C、D对藁本内酯的含量有极显著影响。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。