The present invention relates to a process for the preparation of the mono sodium salt of the derivative 3,5-diiodo-O-[3-iodo-4-(sulphooxy)phenyl]-L-tyrosine (T3S) by starting from the corresponding phenolic compound, in the presence of chlorosulfonic acid and dimethylacetamide as a solvent. The so obtained T3S compound may conveniently be isolated in a pure form as a solid in good yields.
The present invention further relates to the process for T3S preparation, wherein the starting reagent is T2 and further comprising the formulation of such compound in tablets.
Furthermore, the invention discloses non-radioactive immunoassays based on T3S derivatives.
本发明涉及一种以相应的
酚类化合物为起点,在
氯磺酸和二甲基乙酰胺作为溶剂的存在下,制备衍
生物 3,5-二
碘-O-[3-
碘-4-(磺氧基)苯基]-
L-酪氨酸(T3S)的单钠盐的工艺。这样得到的 T3S 化合物可以很方便地以纯固体形式分离出来,收率很高。
本发明进一步涉及 T3S 的制备过程,其中起始试剂为 T2,并进一步包括将这种化合物制成片剂。
此外,本发明还公开了基于 T3S 衍
生物的非放射性免疫测定。