Abstract

A TP II analogue, [1-Nal3] TP II, was synthesized by a conventional solution method, followed by deprotection with 1M TFMSA-thioanisole (molar ratio 1:1) in TFA in the presence of Me2Se and m-cresol as scavengers. The synthetic [1-Nal3] TP II, TP II and [Phe (4 F)3] TP II were tested for comparative effect on the impaired T-lymphocyte transformation by PHA in uremic patients suffering from recurrent infectious diseases. The synthetic analogue was found to have stronger restorative activity than those of our synthetic TP II and [Phe (4F)3] TP II.

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