生物碱类

Specific biological actiities of indole alkaloids presented here include: cytotoxicity, antiiral, antiparasitic, antiinflammatory, serotonin antagonism, Ca-releasing, calmodulin antagonism, and other pharmacological actiities.

在这里，我们展示了吲哚类生物碱的独特生物活性，包括：细胞毒、抗病毒、抗寄生虫、抗炎、拮抗5-羟色胺、钙释放、拮抗钙调蛋白及其他药理活性。

Chemical research indicated that the main chemical constituents of Aquilegia is C- glycosylflavones and oxoaporphine alkaloids, which are the characteristic chemical constituents, especially, the content of C-glycosylflavones is very high in this genus.

通过对耧斗菜属植物的化学研究表明，黄酮碳甙和氧化阿朴菲类生物碱是该属的特征性成分；其中尤以黄酮碳甙含量较高，为主要成分。

This product not only contains VA, VC, VE, VK, VB1, VB2, flavonoid, and coumarin etc., but also is replenished with hawthorn (containing large amount of malol,malic acid, VB2, VC, carotin, calcium, iron, phosporus, flavone and other nutritive substances and numerous alkaloids, more than twenty kinds of ingredients all together) and apricot, which make it more nutritious and easier to be absorbed by the body.

沙棘精不仅保留了沙棘中的维生素A、C、E、K、B1、B2、黄酮类、香豆素等成分，而且因添加了山楂（大量的熊果酸、苹果酸、维生素B2、维生素C、胡萝卜素、钙、铁、磷、黄酮素等二十多种营养物质和大量的生物碱）、杏，使其营养成分更加丰富并且更容易被人体均衡吸收。

Here we applied many types of cinchona alkaloid derivatives and otherβ-aminoalchohol compounds in IFB reactions and investigated the effects of solvent, temperature and catalyst amount on the enantioselectivities in order to find the proper catalyst and optimize reaction condition.

本文考察了多种金鸡纳生物碱衍生物及其它一些β-氨基醇类化合物在IFB反应中的应用，并研究了催化剂的结构、溶剂效应、温度、催化剂用量及反应底物类型对立体选择性的影响，以筛选适合的催化剂和优化反应条件。

So the ester type cinchona alkaloid derivatives should be the preferable catalysts for the IFB reaction withβ-phenyl substituted bromoketones as substrate.

由此可知，这类以酯键形成的金鸡纳生物碱衍生物适于催化β-苯取代溴乙酰甲酸乙酯为底物的IFB反应。

Part 4: Synthesis of (5α)-3-Hydroxy-18-Nor-C-Homo-13a-Azaandrostanes 1-Azabicyclo [5, 3, 0] decane (6) is a core skeleton of stemonine (7) and its derivatives, which are a group of bio-active natural products.

四、（5α）-3-羟基-18-nor-C-homo-13a-氮杂雄甾烷的合成 1-氮杂双环[5.3.0]癸烷(6)是天然产物百部生物碱(7)类分子的骨架结构，许多该类化合物都具有重要的生物活性。

Therefore, to culture toxic dosage-awareness and drug habit in patients is the key to prevent and reduce the rate of aconitine alkaloids poisoning.

因此培养患者有毒中药用药量、防中毒意识和改善产地用药习惯是从根本上预防和减少乌头类生物碱中毒的关键。

Belonging to solanaceae, is an economically important vegetable of the world and widely cultivated in China. Eggplant is one of the seven most important export crops of China. It is a good source of carbohydrate, protein, fattiness, alkaloid, vitamin and mineral. It has been used for treatment the disease of inflammation, hypersusceptibility, cancer and arteriosclerosis.

是我国栽培面积广、居民消费量大的主要蔬菜之一，也是我国蔬菜出口创汇七大作物之一，含有丰富的碳水化合物、蛋白质、脂肪、生物碱、维生素、类黄酮及矿物质等，具有提高人体抗炎症、抗过敏、防癌和抗心血管动脉硬化等功能，备受人们的青睐。

Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.

2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。

A poisonous , crystalline alkaloid derived from certain nightshade plants, especially Egyptian henbane.

阿托品：有毒的结晶性生物碱，从茄类植物，特别是埃及天仙子提炼而得。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。