(2S)-2,3-dihydroxy-3-methyl-butyric acid allyl ester

Boc-D-Ser-Gly-OAllyl

2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-thiazole-4-carboxylic acid (S)-1-(1-carboxy-1-methyl-ethyl)-5,5-dichloro-hexyl ester

[(R)-2-tert-Butoxycarbonylamino-3-(tert-butyl-diphenyl-silanyloxy)-propionylamino]-acetic acid allyl ester

2-[(1S)-1-tert-butyloxycarbonylamino-2-methyl-propyl]-thiazole-4-carboxylic acid (1S)-1-(1-allyloxycarbonyl-1-methyl-ethyl)-5,5-dichloro-hexyl ester