Zur Darstellung und selektiven Reduktion von geschützten Endothiopeptiden

On the Synthesis and Selective Reduction of Protected Endothiopeptides The conversion of some protected peptides structurally related to nicotianamine into the corresponding endothiopeptides has been studied, using 2,4-bis(4-phenoxyphenyl)-1,3,2,4-dithiadiphosphetan 2,4-disulfide, a modified Lawesson reagent. Regioselectivity was observed. The possibility of selective reduction of the thioamide group in the presence of t-butyl ester and urethane groups was demonstrated.