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合成了配合物[Co(qina)2(H2O)2]•2DMSO单晶(qina为喹哪啶酸). 配合物属于单斜晶系, P2(1)/n空间群, 其分子结构为规则的八面体构型, qina以氮原子和羧酸根氧原子与Co2+离子配位, 两个水分子为轴向配位. 配合物之间富有配位水分子分别与DMSO的氧原子、qina中未与Co(II)配位的氧之间氢键作用. 配合物与鱼精DNA作用的紫外光谱和荧光光谱表明, 两者之间有一定的相互作用, 并可能以局部插入方式为主. 相似文献
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根据抗蛋白酶降解的长效肽设计思想, 合成了一系列新型结构的LHRH拮抗剂类似物. 体内生物活性评价结果表明, 所设计的多肽具有比母体肽和阳性对照更长的体内抑制睾酮作用时间和较低的最低有效剂量, 证实了该设计思想的可行性, 并为开发长效LHRH拮抗剂药物提供了新的候选化合物. 相似文献
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设计合成了一类侧链带有络合基团的非天然氨基酸, 即侧链带有N,N-二羧甲基氨甲基、N,N-二酰胺甲基氨甲基和N,N-二羟乙基氨甲基的苯丙氨酸衍生物, 并将这类非天然氨基酸用于促性腺激素释放激素(LHRH)类似物的固相合成. 高效液相色谱分析结果表明, 粗肽的纯度较好, 易于纯化; 用电喷雾质谱测定了多肽的分子量. 这些非天然氨基酸可作为其它肽类药物合成的构建单元. 相似文献
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1 INTRODUCTION As the first inorganic antitumor complex[1], cis- platin (cis-DDP) possesses prominent therapeutic ef- fect for encephaloma, lung cancer and several kinds of genital system tumors[2]. However, cis-DDP has toxic side-effect to a larger extent. Especially due to its damage to kidney, the dose is strictly limited[3]. Therefore, other Pt(II) complexes including carbon- platin were developed[4]. Pd(II) complex is struc- turally similar to Pt(II) complex, so the antitumor … 相似文献
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1 INTRODUCTION In the last few years, much attention has been paid to the molecular structure and biological activity of coordinated complexes in inorganic chemistry field. Ni(Ⅱ) is one of the commonest transition metals with two coordination numbers (4 and 6)[1~3]. Ge- nerally speaking, Ni(Ⅱ) coordination mode depends on the structure of ligand, solvent and reaction con- ditions, among which ligand plays a decisive role and determines not only the molecular structure of the complex bu… 相似文献
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