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Direct competitions of intramolecular C - H insertions into benzylic C - H and 4-nitroor 4-methoxy substituted benzylic C - H of methyl 2-diazo-3-oxo-6-(4-substituted phenyl)-4-(2-phenylethyl)hexanoate 44a and 44b catalyzed by Rh-mediated carbenoid were alsoinvestigated, and the relative reactivities obtained by compound 44a or 44b were comparableto those obtained by indirect method.

此外，还研究了Rh催化分解下，对位硝基取代或甲氧基取代的4-(2-苯基乙基)-6-(4-取代苯基)-2-重氮基-3-氧代己酸甲酯44a、44b苯甲位C-H插入反应的相对速率，与化合物47a和47f得到的结果比较，数据平行。

To improve water solubility of betulin, two acyl groups were introduced at C-3 and C-28 hydroxy groups of betulin. 3, 28-di-O-glutaryl-betulin was synthesized with pyridine as solvent and DMAP as catalyst from betulin and glutaryl anhydride.

为了增强桦木醇的亲水性，对桦木醇的C-3位、C-28位羟基进行修饰，在吡啶作溶剂、二甲基氨基吡啶作催化剂的条件下，与戊二酸酐反应合成桦木醇戊二酸酯。

III. Studies on the total synthesis of macrophllin type of bicyclo[3, 2, 1] octanoid neolignans ( C-4': endo ) The first total synthetic route of macrophllin type of bicyclo[3, 2, 1]octanoidneolignans ( C-4': endo ) was established based on the rearrangement ofbenzofuranoid and bicyclo[3, 2, 1]octanoid neolignans.

三、Macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成研究利用氢化苯骈呋喃类新木脂素和双环[3，2，1]辛烷类新木脂素的重排关系，首次建立了macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成路线。

The crystal structures of two complexes have been determined by X-ray diffraction as: complex (11) is distorted octahedron configuration,α=15. 9002 (6), b=16. 2413 (5), c=23. 4401 (8)〓,β=90°, V=6053. 2 (4)〓, Z=8 and R=0.0531; complex (8) is trigonal bipyramidal configuration,α=9. 3476 (8), b=17. 4236 (13), c=9. 7836 (8)〓,β=91. 197 (3)°, V=1593. 1 (2)〓, Z=2 and R=0.0325, which shows that three secondary amine groups (N-1, N-2, N-3) of the glycosylamine ligand forms the equatorial plane, and the tertiary amine (N-4) and one Cl〓 are pointed on the apical positions.

分别对其进行X-ray衍射分析可以得出：配合物(11)的晶体数据为α=15.9002(6)，b=16.2413(5)，c=23.4401(8)〓，β=90°，V=6053.2(4)〓，Z=8 and R=0.0531，为畸变的八面体构型，而配合物(8)中，α=9.3476(8)，b=17.4236(13)，c=9.7836(8)〓，β=91.197(3)°，V=1593.1(2)〓，Z=2 andR=0.0325，为三角双锥构型，糖胺配体的三个氮原子（N-1，N-2，N-3）位于赤道平面上，而另外一个氮原子（N-4）和一个Cl〓位于轴向上。

For any initial generalized bisymmetric matrix $X_1$, when $AXB=C$ is consistent, we can obtain the generalized bisymmetric solution of the matrix equation AXB=C within finite iterative steps by the iteration method in the absence of roundoff errors; Moreover, the least-norm solution $X^*$ can be obtained by choosing a special kind of initial generalized bisymmetric matrix.

在不考虑机器误差的情况下，当矩阵方程AXB=C相容时，对任意广义双对称X_1，矩阵方程AXB=C的解可以经过有限步迭代得到；特别地，通过选择特殊地初始广义双对称矩阵极小范数解X^*。

The results show that the formation of dry gas is abided by reaction mechanism involving the cleavage of pentacoordinated Carbonium ion which is formed by the protonation of alkanes over acidic catalyst.

结果表明，烷烃分子首先在催化剂酸性中心作用下发生质子化反应，烷烃分子链上易受到氢质子进攻的位置一般在其叔碳原子或碳链中心碳原子附近的C—H键或C—C键处，形成两种反应过渡态物种——五配位正碳离子H-Carbonium和C-Carbonium。

Objective To explore the clinical significance between plasma levels of high-sensitive C reactive protein and atherosclerosis in patients with essential hypertension.Methods By measuring hs-CRP,endothelin,homocysteine,lipid and caroid artery echocardiography,ninety patients were divided into three groups equally,among them,the first group suffered 1-2 degree essential hypertension;the second group suffered 3 degree essential hypertension;excluding hypertension,coronary heart disease,diabetes,infections disease and tumour,control group as a third group was analyzed.

目的 对不同程度的原发性高血压患者进行血浆高敏C-反应蛋白（C-reactive protein，CRP）检测，探讨超敏C-反应蛋白在动脉粥样硬化疾病中的临床意义方法对30例1～2级原发性高血压患者(第1组)和30例3级原发性高血压患者(第2组)进行hs-CRP、内皮素、同型半胱氨酸和血脂检测、颈动脉超声检查，与除外原发性高血压、冠心病、糖尿病以及各感染、肿瘤患者进行比较分析。

Ancient North Korea (B.C. 2333~B.C. 108) It is reported, Myth character wing celtis Mr. in 2333 has founded South Korean first kingdom - ancient North Korea in.

古朝鲜( B.C。 2333~B.C。 108)据传，神话人物檀君于公元前2333年建立了韩国第一个王国-古朝鲜。

Octanoic-1-〓C acid and cholesteryl- [1-〓C] octanoate were first synthesized at home.

辛酸-1-〓C和辛酸-[1-〓C]胆固醇酯属国内首次合成。

The Wave C++ preprocessor library uses the Spirit [4] parser construction library to implement a C++ lexer with ISO/ANSI Standards conformant preprocessing capabilities.

Wave C++预处理器库使用了 Spirit [4] 分析器构建框架来实现一个符合ISO/ANSI标准预处理功能的C++ lexer。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。