A method for making a valproic acid derivative comprising a functionalized spacer arm attached to a .delta. carbon atom of a valproic acid molecule is disclosed. The method proceeds by attaching a spacer arm joined to an inorganic moiety to a valproic acid precursor to make an alkylated compound, derivatizing the alkylated compound in a liquid medium to make the valproic acid derivative, and then separating the valproic acid derivative from the liquid medium. The valproic acid derivative can be used to make an immunoreactive valproic acid conjugate.
本发明揭示了一种制备含有功能化间隔臂的
丙戊酸衍
生物的方法,所述方法包括将连接到无机基团的间隔臂连接到
丙戊酸前体上,制备烷基化化合物,将烷基化合物在液体介质中衍生化制备
丙戊酸衍
生物,然后从液体介质中分离
丙戊酸衍
生物。所述
丙戊酸衍
生物可用于制备免疫反应性
丙戊酸共轭物。