(2R,3R,4S,5S)-4-iodo-2,3,5-trimethyl-1-oxaspiro[5.5]undecane

(2R,3R,4S,5S,6R)-4-iodo-2,3,5-trimethyl-6-phenyltetrahydro-2H-pyran

(7R,8R,9S,10S)-9-iodo-7,8,10-trimethyl-6-oxaspiro[4.5]decane

(2R,3R,4S,5S,6S,7S,10R)-4-iodo-7-isopropyl-2,3,5,10-tetramethyl-1-oxaspiro[5.5]undecane

(2R,3R,4R,6R,7S,10R)-4-iodo-7-isopropyl-2,3,10-trimethyl-1-oxaspiro[5.5]undecane