PROCESS FOR THE PREPARATION OF REACTIVE THYROID GLAND HORMONES T3 AND T4 DERIVATIVES THAT ARE CAPABLE OF COUPLING, AND THEIR USE

摘要

Process for the preparation of reactive, couplable derivatives of the thyroid hormones 3,3',5-triiodothyronine (T3) and 3,3',5,5'-tetraiodothyronine (T4) by reaction with reactive carboxylic acid derivatives, which process comprises sylylating all the functional groups of the thyroid hormone by reaction with a reactive triorganosylyl derivative and then reacting the persylylated derivative of the thyroid hormone thus obtained with an activated carboxylic acid derivative.