p. 4429 - 4440
(2007/10/02)6-carbomethoxy-3,6-dimethyl-2,4-cyclohexadien-1-one, dimethyl ketal
2-carbomethoxy-2,5-dimethyl-3-cyclohexen-1-one
6-bromo-2-carbomethoxy-2,5-dimethyl-3-cyclohexen-1-one, dimethyl ketal
6-bromo-2-carbomethoxy-2,5-dimethyl-3-cyclohexen-1-one, dimethyl ketal