4,6-dimethoxy-N-p-tolylsulphonylindole

2,5-anhydro-4,6-isopropylidene-3-O-p-toluenesulfonyl-L-idose ethylene acetal

trans-2-(1-hydroxy-1-methylethyl)cyclohexyl p-toluenesulfonate

3'-Tosyl-5'-O-trityl thymidine

N-Ts-2-(3'-methoxyphenyl)-4-methylaniline