Methanesulfonic acid (R)-1-((R)-5-oxo-tetrahydro-furan-2-yl)-ethyl ester

(6-benzenesulfonyl-2-hydroxy-1-methyl-5-oxoheptadecyl)-carbamic acid benzyl ester

5-benzyloxycarbonylamino-4-(tert-butyldimethylsilanyloxy)-hex-2-enoic acid ethyl ester

5-(1-iodoethyl)-dihydrofuran-2-one

5-(1-azidoethyl)-dihydrofuran-2-one