2-Butenoic acid, 3-methyl-, (9R,10R)-10-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,2-b:3,4-b′]dipyran-9-yl ester
Samidin
2-Butenoic acid, 3-methyl-, 10-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,2-b:3,4-b′]dipyran-9-yl ester, (9R-cis)-
Crotonic acid, 3-methyl-, 9-ester with 9,10-dihydro-9,10-dihydroxy-8,8-dimethyl-2H,8H-benzo[1,2-b:3,4-b′]dipyran-2-one acetate
2H,8H-Benzo[1,2-b:3,4-b′]dipyran, 2-butenoic acid deriv.
(+)-Samidin