Disclosed is a method of making conjugates of cell binding agents and small molecule drugs comprising reacting a cell binding agent with a bifunctional cross-linking moiety to thereby provide the cell binding agent with a reactive disulfide group and then reacting the modified cell binding agent with a small molecule drug comprising a free thiol group. Bifunctional cross-linking moieties are also disclosed.
公开了一种制备细胞结合物与小分子药物共轭物的方法,包括将细胞结合物与双功能交联基团反应,从而使细胞结合物具有反应性二
硫化物基团,然后将修饰后的细胞结合物与含有游离巯基团的小分子药物反应。还公开了双功能交联基团。