Abstract: | A two-stage method for the synthesis of thyroliberin is proposed. A complex of the sodium salt of histidine with 15-crown-5 is used for the protection of the carboxylic fraction of histidine.A. V. Bogatskii Physicochemical Institute, Academy of Sciences of the Ukrainian SSR, Odessa. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 222–224, March–April, 1986. |