methyl 12(S)-8,12-epoxy-labdan-15-oate

1-Cyclohexene-1-hexanoic acid,2-(3-methoxy-3-oxopropyl)-b,e,3,3-tetramethyl-, methyl ester,[S-(R*,R*)]-

Cyclohexanehexanoic acid, b,e,1,3,3-pentamethyl-2-(3-oxobutyl)-,[1R-[1a(bS*,eS*),2b]]-

methyl 12(R)-8,12-epoxy-labdan-15-oate

methyl 9(R,S)-9-methyl-10-nor-8-oxo-8,9-seco-labd-5(10)-oate