抄録
Trifluoromethanesulphonic acid removed all protecting groups from Z-Thr-Lys (Z)-Pro-Arg (Tos)-OH to give the phagocytosis-stimulating tetrapeptide, H-Thr-Lys-Pro-Arg-OH, named tuftsin. To this synthesis, the 5-chloro-8-quinolyl ester procedure was applied. With this connection, a number of analogous active esters was prepared.
