(2R,2(3S),3R,6R,8R,8(1R),9S)-2-(4-benzyloxy-3-methyl-1-butenyl)-8-(3-methoxycarbonyl-1-methyl-2-propenyl)-3,9-dimethyl-1,7-dioxaspiro[5.5]undecane

(2R,2(3S),3R,6R,8R,8(1R),9S)-2-(4-benzyloxy-3-methyl-1-butenyl)-8-(2-hydroxy-1-methylethyl)-8-formyl-3,9-dimethyl-1,7-dioxaspiro[5.5]undecane

(2R,2(1R),3S,6R,8R,9R)-2-(2-acetoxy-1-methylethyl)-8-formyl-3,9-dimethyl-1,7-dioxaspiro[5.5]undecane

(S)-4-[(2S,3R,6R,8S,9S)-8-((R)-4-Benzyloxy-1-methyl-butyl)-3,9-dimethyl-1,7-dioxa-spiro[5.5]undec-2-yl]-2-methyl-butan-1-ol

(2R,2(1R),3S,6R,8S,8(3S),9R)-2-(3-methoxycarbonyl-1-methylpropyl)-8-(3-methyl-4-pentenyl)-3,9-dimethyl-1,7-dioxaspiro[5.5]undecane