(R)-3-tert-Butoxycarbonylamino-3-{5-[(5R,6R,7S)-6-(tert-butyl-dimethyl-silanyloxy)-9-iodo-2,2-dimethyl-1,3-dioxa-spiro[4.4]non-8-en-7-yloxy]-6-chloro-pyridin-2-yl}-propionic acid

(1R,4S,5S)-4,5-bis(methoxymethoxy)-2-cyclopenten-1-ol

(1R,2R,5R)-3-iodo-2',2'-dimethyl-6-oxaspiro[bicyclo[3.1.0]hexane-2,4'-[1,3]dioxolan]-3-ene