endo-1,2,3a,4,7,7a-hexahydro-3-hydroxy-1,2-isopropylidenedioxy-4,7-methano-1H-indene

lithium anion of dimethyl methylphosphonate

(1R,5S,8R)-8-methoxy-3,3-dimethyl-2,4,7-trioxabicyclo[3.3.0]octan-6-one

1-O-β-2,3-O-isopropylidene-5-deoxy-5-iodo-D-ribofuranose

(4R,5R)-5-(methoxycarbonyl)-2,2-dimethyl-1,3-dioxolane-4-carboxylic acid