The Saussurea involucrata chemical composition was: alkaloid, flavanone, sterol, volatile oil, 16 kind of amino acids, Saussurea involucrata lactone and so on.
雪莲化学成分为：生物碱、黄酮、甾醇、挥发油、16种氨基酸、雪莲内酯等。
Bilobalide in leaves had a high ratio of total terpene lactone.
叶片中的双叶利德具有很高的总萜内酯比例。
The polymer may contain a lactone structure.
聚合物是含有内酯结构的聚合物。
This is the large ring lactone class antibiotic.
本品为大环内酯类抗生素。
American oak is much higher in lactone concentrations.
是在高于美国橡木桶内酯的含量。
The brain is mainly used to do tofu plaster or lactone.
大脑主要是用来做豆腐石膏或内酯。
Study on technology of lactone curd of peanut and carrot;
研究了液相色谱-质谱联用技术检测花生中的黄曲霉毒素。
Natural esters • Natural aldehydes • Nathral Ketone, Lactone, Pyridine.
天然酯类•天然醛类•天然酮类，内酯类，吡嗪类。
The effective chemical composition are the lactone and ketonic compound.
有效化学成分为倍半萜内酯及黄酮。
Synthetic esters • Synthetic aldehydes • Synthetic Ketone, Lactone, Pyridine.
合成酯类•合成醛类•合成酮类，内酯类，吡嗪类。
The present invention relates to lactone compound, synthesis method and application.
本发明涉及内酯化合物、合成方法及用途。
The invention provides a large ring lactone compound and a preparation method thereof.
本发明提供了一种大环内酯类化合物及其制备方法。
And we confirm that the final product is MVA lactone by ultimate analysis and infrared analysis.
经元素分析、红外分析及折光率测定，表明最终产物确是甲瓦龙酸内酯。
The invented medicine maintains maximally the active component oshaic lactone in angelica root oil.
该当归油软胶囊最大限度地保留了当归油中的主要活性成分藁本内酯。
Its molecular structure is made up of a five member, unsaturated lactone ring with two hydroxyl groups.
其分子结构是由五个成员国，不饱和内酯环两个羟基。
The oxidation of LCVL by oxidizing agents such as hydrogen peroxide affords crystal violet lactone (CVL).
用氧化剂如过氧化氢氧化lcvl，得到结晶紫内酯(CVL)。
The molecular skeleton topology of the title sesquiterpene lactone is only related to that of the Yndai lactone c.
该分子骨架拓扑在迄今已知的倍半萜内酯中只与银袋内酯丙相似。
The L-homoserine lactone hydrochloride was synthesized from L-methionine using both one-pot method and two-step method.
从L-蛋氨酸出发，分别采用“一锅法”和两步法探讨了L-高丝氨酸内酯盐酸盐的合成。
AIM: to study the relationship between the lactone forms of 10-hydroxycamptothecin (HCPT) and their antitumor activities.
目的：研究10 -羟基喜树碱(HCPT)的内酯环形式与抗癌活性之间的关系。
There were significant effects of soil water content on flavonoid, terpene lactone and endogenous hormones concentration of l Ginkgo leaf.
土壤水分含量对银杏叶中黄酮、内酯含量产生了显著的影响。
Jasmine has a strong spicy, floral aroma accompanied by a kind of end rhyme lactone kind of celery, flavors and fragrances used in daily chemicals.
具有强烈的茉莉辛香、花香香气并伴有一种内酯样的芹菜底韵，广泛用于日化香精香料。
In the first part, chemical synthesis, including by acraldehyde, malonic ester, ami no lactone and others were discussed and synthesis by hydantoin was emphasized.
第一部分讨论了DL-蛋氨酸及其衍生物的化学合成，包括丙烯醛法、丙二酸酯法，氨基内酯法等，并着重介绍了海因法。
Terpene lactone content of stem were the lowest, corresponding to 1/3 of leaves and 1/2 of root while bilobalide in leaves had a high ratio of total terpene lactone.
银杏茎中萜类内酯含量最低，相当于叶含量的1/3和根含量的1/2。叶中白果内酯含量在总萜类内酯中所占比例较高，而在根和茎中所占比例则较低。
The invention relates to compounds of a general formula (1) and pharmaceutically acceptable salts, and mainly discloses 4'-substituted 13-cyclo-aza-lactone derivatives.
本发明涉及通式（1）化合物及药学上可以接受的盐，主要提出一种4”取 代的13-环氮杂内酯类的衍生物。
Method Plasma concentrations of 9-nc lactone form (lactone 9-nc) and the total of lactone and carboxylate forms (total 9-nc) were determined by the validated HPLC method.
方法：采用hplc法测定大鼠尾静脉注射给药后不同时间点9 - NC的内酯型浓度和总浓度并进行药物动力学拟合。
The content of flavanone and lactone in leaf and the leaf output were studied by randomizing block arrangement of 31 gingko female varieties(strain) and 4 staminiferous plant type single clone.
采用31个银杏雌性品种和4个雄株类型的单株无性系，随机区组排列，对叶产量性状及其与叶产量的相关性，叶黄酮、内酯含量进行了研究。
The content of flavanone and lactone in leaf and the leaf output were studied by randomizing block arrangement of 31 gingko female varieties(strain) and 4 staminiferous plant type single clone.
采用31个银杏雌性品种和4个雄株类型的单株无性系，随机区组排列，对叶产量性状及其与叶产量的相关性，叶黄酮、内酯含量进行了研究。
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