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辐射增敏剂是近年来肿瘤临床研究中较为活跃的新领域。世界卫生组织在英国剑桥召开的肿瘤合理放疗的调查者工作会议中指出,乏氧细胞增敏剂特别适合于发展中国家使用。这一期间由于辐射增敏剂的应用和辐射防护剂向肿瘤领域延伸,新的临床用途相继促进了肿瘤临床医学的发展,近期取得一定的进展。 相似文献
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1. α,ω-Bis- (p-alkoxyphenylamino) -alkanes, N,N'-bis-(p-substituted phenyl)- alkane dicarboxamides and N, N'-bis-(p-substituted phenyl)-alkane dicarboxylates were prepared for studying the relationship between chemical structure and thera- peutic activity, against Schistosomiasis japonica in experimental animals. 2. α,ω-Bis-(p-alkoxyphenylamino)-heptanes were prepared from p-alkoxyaniline and 1,7-dibromoheptane in the presence of sodium bicarbonate. α,ω-Bis-(p-alkoxy- phenylamino)-pentanes were prepared by hydrolysis of N,N'-bis-(p-alkoxyphenyl)- N, N'-bis-(p-toluene sulfonyl)-pentanediamines with 25% hydrochloric acid, while the latter were obtained by condensation of N-(p-alkoxyphenyl)-p-toluene sulfonamides with 1,5-dibromopentane in alcoholic alkaline solution. 3. N, N'-Bis-(p-substituted phenyl)-alkane dicarboxamides were prepared from p-substituted aniline and alkane dicarboxylic acid chlorides. According to Grimmel's method, we also prepared these compounds of this series by the reaction of p,p'-bis- (dimethylamino)-phosphazo benzene with corresponding alkane dicarboxylic acid. In the case of succinic acid, we obtained, however, mainly N-(p-dimethylaminophenyl)- succinimide instead of succinic diamide. 4. The intermediate, p-diethylamino-ethoxyaniline, was prepared by hydrolysis of the condensation product of p-acetaminophenol and diethylaminoethyl chloride. 5. Sodium salt of dimethylaminophenol was treated with alkane dicarboxylic acid chloride to give the corresponding N, N'-bis-(p-dimethylaminophenyl) -alkane dicar- boxylates. 相似文献
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2-(2-氨基乙基)-异硫脲双盐酸盐(AET·2HCl)分子结构的转化与所用的溶剂、反应温度、时间等对产品有较大的影响。采用不同溶剂或加入少许二甲基甲酰胺(DMF)、碘化钾(KI)等,观察到用氯乙胺盐酸盐与硫脲在异丁醇中反应可提高AET·2HCl的产量,产率达75%(文献产率仅29%)。所得产物除经元素分析、物理化学常数测定和光谱分析证明其结构外,还与文献方法制得之产品,用Sadtler标准光谱进行比较。 相似文献
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