Disclosed are amplifier molecules: various organic compounds having branched structures terminating with amine groups to which pharmacologically active groups can be chemically attached. A number of MRI contrast-enhancing agents were synthesized, each comprising plural active groups, such as stable nitroxides and complexes of trivalent metal cations. Such syntheses were successfully performed using a number of amplifiers having different branched structures, demonstrating the general utility of the pertinent chemistry in the synthesis of amplifiers having any of a wide variety of pharmacologically active groups. Amplifiers were also synthesized having linkers terminating with chemically reactive groups such as isothiocyanates, which render the amplifier bifunctional: attachable to polymers, biomacromolecules, or other biocompatible entity possessing multiple reactive sites such as terminal amines. Via such chemistry, the amplifiers are attachable to monoclonal antibodies for concentration of pharmacologically active groups at a desired site in the body.
揭示了放大器分子:各种具有分支结构并以胺基终止的有机化合物,可在其上
化学地连接药理活性基团。合成了多种MRI增强对比剂,每种包含多个活性基团,如稳定的亚硝基和三价
金属阳离子的络合物。使用具有不同分支结构的多种放大器成功地进行了这些合成,展示了相关
化学在合成具有各种药理活性基团的放大器方面的普遍实用性。还合成了具有终止于
化学反应性基团(如异
硫氰酸酯)的连接剂的放大器,使放大器具有双功能性:可连接到聚合物、
生物大分子或其他具有多个反应位点(如末端胺基)的
生物兼容实体。通过这种
化学方法,可以将放大器连接到单克隆
抗体,以便将药理活性基团浓集在体内所需的部位。