加氨的

Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.

在探讨了含有两个手性中心的β-氨基醇之后，选择了只有一个手性中心的β-氨基醇，一是手性中心为连羟基的手性碳原子：D-N，N-二烷基-2-氨基丁醇；二是手性中心为连氨基的手性碳原子：D-苯基甘氨酸衍生物和L-缬氨酸衍生物。D-2-氨基丁醇的催化效果不太好，这与其结构的空间位阻较小有关系，反应产物与连羟基手性碳构型一致；由苯基甘氨酸和缬氨酸出发合成五种β-氨基醇6-10，研究了不同ee％的-6作用下的二乙基锌-苯甲醛加成反应，发现该催化剂具有不对称放大效应；-7，9，lO的催化效果也比较令人满意，光学产率80％以上，所得产物构型与催化剂构型一致。

Methods: 1. Rats in the study were divided into six groups: normal control group, hyperlipidemia group (fed with high-cholesterol diet), atherosclerosis group (vitamin D〓 intramuscular injection, endothelium denudate and fed with high-cholesterol diet with vitamin D〓), L-arginine group (besides treatment as atherosclerosis group, 2.25％ L-arginine was added in the drinking water), chitosan group (besides treatment as atherosclerosis group, 5％ chitosan was added in the diet), simvastatin group (besides treatment as atherosclerosis group, 0.03％ simvastatin was added in the diet). The study lasted 90 days.

1。实验大鼠分为6组：正常对照组、高脂血症组、动脉粥样硬化组(维生素D〓肌肉注射加动脉球囊损伤手术加含维生素D〓的高脂饲料饲养)、L-精氨酸组(动脉粥样硬化组基础上饮水中加入2.25％L-精氨酸)、几丁糖组(动脉粥样硬化组基础上饲料中加入5％几丁糖)、辛伐他汀组(动脉粥样硬化组基础上饲料中加入0.03％辛伐他汀)，90天后取标本检测。2。

Iodide can be rapidly bound as 3-iodotyrisine, 3, 5-diiodotyrosine, and thyroxine during the chloroperoxidase-catalyzed iodination.

在加氯过氧化物酶催化的碘化过程中，碘能很快地结合形成3-碘酪氨酸、3，5-二碘酪氨酸和甲状腺素。

Methods 100 patients chronic cor pulmonale with heart failure were divided randomly into the intervention group (50 cases) and the control group (50 cases), for the basic routine treatment,the intervention group was administered 100mg amrinone and nikethamide 1.5g each day for 7 days, while the control group was treated with 10mg phentolamine for 7 days, the clinical therapeutic effect and side effects were compared.

将100例慢性肺心病合并心衰的患者随机分为观察组和对照组，各50例，观察组在基础治疗的同时每天加用氨力农100mg和尼可刹米1.5g，对照组在基础治疗的同时每天加用酚妥拉明10mg。目的探讨氨力农联合尼可刹米治疗慢性肺心病合并心衰的临床疗效。

Methods 100 patients chronic cor pulmonale with heart failure were divided randomly into the intervention group (50 cases) and the control group (50 cases), for the basic routine treatment,the intervention group was administered 100mg amrinone and nikethamide 1.5g each day for 7 days, while the control group was treated with 10mg phentolamine for 7 days, the clinical therapeutic effect and side effects were compared.

目的 探讨氨力农联合尼可刹米治疗慢性肺心病合并心衰的临床疗效。方法将100例慢性肺心病合并心衰的患者随机分为观察组和对照组，各50例，观察组在基础治疗的同时每天加用氨力农100mg和尼可刹米1.5g，对照组在基础治疗的同时每天加用酚妥拉明10mg。两组疗程均为7d。

By the polycondensation of amino acid 5-fluorouracil -1, 3-dipropyl esters with bis (2-chloroethyl) phos- phoramidic dichloride in the presence of 〓 or in vacuo, ten new polymers containing 5- fluorouracil, nitrogen mustard and amino acid were synthesized.

将1，3-双-5-氟尿嘧啶与二氯膦甲酸乙酯或二氯膦乙酸乙酯在DMF中反应制备得到20个三元共聚物，体外抗肿瘤试验表明：含有甘氨酸、缬氨酸、苯丙氨酸和酪氨酸的聚合加显示了一定的选择性，并且分析讨论了生物活性与结构之间的关系。

objective:to compare and investigate the therapeutic effect of two different methods using oral methotrexate ,and mtx consociates mifepristone to cure ectopic pregnancy.

目的：对比观察单独口服氨甲蝶呤及氨甲蝶呤加用米非司酮治疗异位妊娠的疗效。

Effects of microwave power, reaction time, reaction temperature, solvent etc. on reaction were studied by a single factor tests. The results show that maleic acid is more active than fumaric acid; the introduction of methyl group on the double bond can weak the reactivity of the Michael addition reaction; the ester base is more propitious to complete the Michael addition reaction than the nitrile base.

为研究微波下迈克尔反应的规律，本文采用单模聚焦微波有机合成仪，通过对顺丁烯二酸、反丁烯二酸和氨水合成DL-天冬氨酸、顺式3-甲基丁烯二酸和氨水合成3-甲基天冬氨酸、丙烯酸甲酯和氨水合成β-丙氨酸、丙烯腈和氨水合成β-氨基丙腈等五个反应对迈克尔加成反应进行了研究。

" Adding water to lime yields calcium hydroxide (slaked lime, calcium hydrate , hydrate d lime, or caustic lime), which is used in mortar, plasters, cements, whitewash, hide dehairing, and water softening and purification and as a source of other calcium salts."

往石灰中加水会产生氢氧化钙(熟石灰、水合钙、水合石灰或苛性石灰)，在灰浆、熟石膏、水泥、白涂料、毛皮去皮、氨的回收、水的软化、糖的精炼、石化工业、家禽饲料和食品中都有用途。

" Adding water to lime yield s calcium hydroxide (slaked lime, calcium hydrate, hydrated lime, or caustic lime), which is used in mortar, plasters, cements, whitewash, hide dehairing, and water softening and purification and as a source of other calcium salts."

往石灰中加水会产生氢氧化钙(熟石灰、水合钙、水合石灰或苛性石灰)，在灰浆、熟石膏、水泥、白涂料、毛皮去皮、氨的回收、水的软化、糖的精炼、石化工业、家禽饲料和食品中都有用途。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。