5-[(Z)-(R)-3-tert-Butoxycarbonylamino-7-(tert-butyl-dimethyl-silanyloxy)-1-trimethylsilanyl-hept-1-enyl]-3,4-dihydro-2H-pyridine-1-carboxylic acid benzyl ester

[(R)-5-(tert-Butyl-dimethyl-silanyloxy)-1-trimethylsilanylethynyl-pentyl]-carbamic acid tert-butyl ester

7-[tert-butyl(dimethyl)silyloxy]hept-1-yn-3(S)-ol

2-[(R)-5-(tert-Butyl-dimethyl-silanyloxy)-1-trimethylsilanylethynyl-pentyl]-isoindole-1,3-dione

5-(tert-Butyl-diphenyl-silanyloxy)-hept-6-yn-1-ol