... tert-Butyl Group as Thiol Protection in Peptide Synthesis' Juliusz Jacek Pastuszak and Andrzej Chimiak* Department of Organic Chemistry, Technical University of Gdarisk, 80-952 Gdarisk, Poland Received July 30, 1980 ... J. Org. Chem., Vol. 46, No. 9, 1981 1871 ...