(1S,2S,3S,5R)-2,6,6-trimethyl-bicyclo[3.1.1]hept-3-yl carbamate

di[(1S,2S,3S,5R)-2,6,6-trimethyl-bicyclo[3.1.1]hept-3-yl] imidodicarbonate

(1S,2S,3S,5R)-2,6,6-trimethylbicyclo[3.1.1]heptan-3-yl carbonazidate

(1R,2R,6S,8R)-2,9,9-Trimethyl-5-oxa-3-aza-tricyclo[6.1.1.02,6]decan-4-one

(1R,2R,6S,8R)-3-((E)-But-2-enoyl)-2,9,9-trimethyl-5-oxa-3-aza-tricyclo[6.1.1.02,6]decan-4-one