The invention provides compounds that are chemically modified by covalent attachment of a water-soluble oligomer. A compound of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from those of the compound not attached to the water-soluble oligomer.
本发明提供了通过共价连接
水溶性低聚物进行
化学修饰的化合物。本发明的化合物在通过多种给药途径中的任何一种给药时,会表现出与未附着
水溶性低聚物的化合物不同的特性。