((1R,4S,5R)-4,5-Bis-methoxymethoxy-cyclopent-2-enyloxy)-tert-butyl-diphenyl-silane

2,2-Dimethyl-propionic acid (S)-2-(R)-1,4-dioxa-spiro[4.4]non-2-yl-2-hydroxy-but-3-ynyl ester

2,2-Dimethyl-propionic acid (S)-4-[(3R,4S)-3-(tert-butyl-diphenyl-silanyloxy)-4-(4-methoxy-benzyloxy)-5-oxo-cyclopent-1-enyl]-2-(R)-1,4-dioxa-spiro[4.4]non-2-yl-2-hydroxy-but-3-ynyl ester

2,2-Dimethyl-propionic acid (S)-2-((R)-1,2-dihydroxy-ethyl)-2-hydroxy-but-3-ynyl ester

(4R,5S)-4-(tert-Butyl-diphenyl-silanyloxy)-5-hydroxy-cyclopent-2-enone