(R)-2-((2R,5S)-5-{(1R,2S,3R)-2-(tert-Butyl-dimethyl-silanyloxy)-3-[(2R,5S)-5-((R)-2-dimethylamino-pentyl)-tetrahydro-furan-2-yl]-1-methyl-butyl}-tetrahydro-furan-2-yl)-propionic acid

(S)-2-[(2R,5S)-5-((1S,2S)-2-Hydroxy-1-methyl-pentyl)-tetrahydro-furan-2-yl]-propionic acid benzyl ester

(2R,3R,6S,7R,8S)-3,6-epoxy-8-hydroxy-2,7-dimethylundecanoic acid

(1S,2S,5S,6R,7R)-2,6-Dimethyl-5-propyl-4,10-dioxa-bicyclo[5.2.1]decan-3-one

2-(5-{2-(tert-butyl-dimethyl-silanyloxy)-3-[5-(2-dimethylamino-pentyl)-tetrahydro-furan-2-yl]-1-methyl-butyl}-tetrahydro-furan-2-yl)-propionic acid 1-{1-[5-(1-benzyloxycarbonyl-ethyl)-tetrahydro-furan-2-yl]-ethyl}-butyl ester