1,1,3,3,6,6,10,10-octamethyl-11-thiadispiro[3.0.5⁵.1⁴]undecane

1,1,3,3,6,6,10,10-octamethyl-8,11-dithiadispiro[3.0.5⁵.1⁴]undecane

1,1,3,3,6,6,11,11-octamethyl-12-thiadispiro[3.0.6⁵.1⁴]dodecane

2,2-ditert-butyl-4,4,6,6-tetramethyl-1-thiaspiro[2.3]hexane

2,2,4,4-tetramethylcyclobutan-1-one