ethyl (6S,9R,12R)-9-(2-azidoethyl)-12-((R)-1-hydroxy-2-methylpropyl)-2,2,5,6,8-pentamethyl-4,7,10-trioxo-3-oxa-5,8,11-triazatridecan-13-oate

(2S,3R)-(+)-ethyl 2,3-dihydroxy-3-propionate

(2S,3R)-(+)-ethyl 2,3-dihydroxy-3-propionate 2,3-cyclic sulphate

(2R,3R)-β-OH-Leu-OEt