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- Chiral synthesis can be achieved by taking advantage of natural or synthetic optically active compounds. 在手性合成中利用了天然或合成的光學(xué)活性化合物。
- In fact, l ipases often display high enantioselectivity, which makes these catalysts especi ally attractive for the interest for optically active compounds. 尤其脂肪酶在有機合成中經(jīng)常表現出極高的立體選擇性,因此它們經(jīng)常被用于制備光學(xué)活性化合物。
- The catalyzed asymmetric synthesis was the effective method to prepare the optics active compounds, the pentamethide obtaines the widespread application as the reagent or the catalyst in this domain. 催化不對稱(chēng)合成是制備光學(xué)活性化合物的有效方法，金屬有機化合物作為試劑或催化劑在這一領(lǐng)域得到了廣泛的應用。
- The catalyzed asymmetric synthesis was the effective method to prepare the optics active compounds,the pentamethide obtaines the widespread application as the reagent or the catalyst in this domain. 催化不對稱(chēng)合成是制備光學(xué)活性化合物的有效方法,金屬有機化合物作為試劑或催化劑在這一領(lǐng)域得到了廣泛的應用。
- The enantioselective ring opening of epoxides catalyzed by chiral catalysts has emerged as an important synthetic strategy for the preparation of various optically active compounds. 摘要手性催化的環(huán)氧化物立體選擇性開(kāi)環(huán)反應可以用來(lái)制備多種具光學(xué)活性的化合物，因而成為有機合成中極為重要的方法之一。
- Showing no optical activity in polarized light. 無(wú)旋光的極化光下無(wú)光學(xué)反應的
- Artemisinin, an active compound extracted from Artemisia annua, L. together with its derivatives are widely used as anti-malarial drugs. 摘要青蒿素是從植物黃花蒿中提取的抗瘧疾的活性成份，目前在臨床上廣泛用于治療瘧疾。
- The intradermal test must be done with active compound before using cephalosporins in patients allergic to pini... 若患者對青霉素過(guò)敏,頭孢菌素類(lèi)抗生素在使用前必須進(jìn)行原藥皮膚過(guò)敏試驗。
- This review discussed the development of amide herbicdes, mainly new active compound and some questions in application. 評述了酰胺類(lèi)除草劑的發(fā)展、主要新品種及使用中的若干問(wèn)題。
- Optical active ethyl 4-cloro-(R)-3-hydroxybutyrate was prepared by stereo selective bioreduction of ethyl 4-chloro-acetoacetate with baker's yeast. 以4 氯乙酰乙酸乙酯為原料,以面包酵母為手性生物催化劑,選擇性合成光學(xué)活性4 氯 (R) 3 羥基丁酸乙酯。
- The extract from that bark is a potent blend of active compounds. 這種樹(shù)皮的提取物是一種活性化合物的強效混合物。
- Racemization is found with optically active substrate substrates. 發(fā)現旋光基質(zhì)有外消旋作用。
- Conversion of an optically active substance to a racemic form. 外消旋轉化將光學(xué)活性物質(zhì)轉化為外消旋形式
- The results of GC-MS showed that the active compound of eucalyptus oil was 1,8- cineole, the relatively content was about 90.81%. 經(jīng)GC-MS分析，桉葉油的主要化學(xué)成分為1;8-桉葉素，其相對含量為90.;81%25。
- Influence of the Optical Activity of BSO on Spatial Light Modulator[J]. 引用該論文 孔迪;楊建坤;李修建;劉菊.
- The optical activity of a molecule is not determined by its chirality. 旋光性不是由手性決定的,因為手性是人為抽象出的一種概念。
- A pharmacologically active compound produced by growing microorganisms which kill or inhibit growth of other microorganisms. 通過(guò)培育某些可殺滅其它微生物或可抑制其它微生物的微生物而產(chǎn)生的具有藥理活性的一類(lèi)化合物.
- Artemisinin,an active compound extracted from Artemisia annua,L.together with its derivatives are widely used as anti-malarial drugs. 青蒿素是從植物黃花蒿中提取的抗瘧疾的活性成份,目前在臨床上廣泛用于治療瘧疾。
- In this paper, the leaves of Loropetalum chinense var. rubrum Yieh were used as raw material, and the bacteriostatic active compound with different solvents extracted in turn. 摘要本研究以紅檵木葉為材料，對其抑菌活性成分進(jìn)行提取，將提取液用不同溶劑分步萃??；
- Garcnia Cambogia contains a biologically active compound which is known to inhibit the synthesis of lipids and fatty acids and lower the formation of LDL and triglycerides. 藤黃含有一種生物活性化合物，已知這種物質(zhì)能夠抑制血脂及脂肪酸的合成，并降低低密度脂蛋白和甘油三酯的形成。
