ethyl (2R,3R)-3-[(4R,5R)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]-2-hydroxybutanoate

(2R,3S)-2-(allyloxy)-3-[(4R,5R)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]-butan-1-ol

(3S,4S)-3-(allyloxy)-4-[(4R,5R)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]pentanenitrile

(E)-(5S,6S)-5-((S)-2-{3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2,2-dimethyl-propionyloxy}-4-methyl-pentanoyloxy)-6-((4R,5R)-2,2-dimethyl-5-phenyl-[1,3]dioxolan-4-yl)-hept-2-enoic acid tert-butyl ester