Solid phase synthesis; the next amino acids are: Fmoc-Gly-OOBt, Fmoc-Tyr-OOBt, Fmoc-Ser-OOBt, Fmoc-Trp-OOBt, Fmoc-His(Trt)-OBT, pGlu-OOBt; Yield given. Multistep reaction;

water T=50°C; 2160 h; pH = 6.5; var. temp. and times of degradation; Product distribution;

Multistep reaction;