2-hydroxy-5-methoxy-3-[(2,5,5-trimethyl-1,2,3,4,4a,6,7,8-octahydrocyclopropa[j]naphthalen-1a-yl)methyl]cyclohexa-2,5-diene-1,4-dione 、
乙酸酐 生成 [4-methoxy-3,6-dioxo-2-[(2,5,5-trimethyl-1,2,3,4,4a,6,7,8-octahydrocyclopropa[j]naphthalen-1a-yl)methyl]cyclohexa-1,4-dien-1-yl] acetate