9α,11-carbonyldioxy-12-propanedionyldrim-7-ene

(1S,4aS,8aS)-2-[1,3]Dioxan-2-yl-1-hydroxy-5,5,8a-trimethyl-1,4,4a,5,6,7,8,8a-octahydro-naphthalene-1-carbaldehyde

12-propandionyldrim-7-ene-9α,11-diol

9α,11-carbonyldioxy-12-(tert-butyl)dimethyl-silyldrim-7-ene