2h,8h-benzo(1,2-b:3,4-b’)dipyran-2-one-acetate

3-(alpha-methylbutyryloxy)-4-acetoxy-3,4-dihydroseseline

(alpha-methylbutyryloxy)-3’-acetoxy-4’-dihydro-3’,4’-seselin

2-methyl-,9-esterwith9,10-dihydro-9,10-dihydroxy-8,8-dimethyl-butyricaci