2-Butenoic acid, 2-methyl-, (9R,10R)-9,10-dihydro-8,8-dimethyl-10-(3-methyl-1-oxobutoxy)-2-oxo-2H,8H-benzo[1,2-b:3,4-b′]dipyran-9-yl ester, (2Z)-
2-Butenoic acid, 2-methyl-, 9,10-dihydro-8,8-dimethyl-10-(3-methyl-1-oxobutoxy)-2-oxo-2H,8H-benzo[1,2-b:3,4-b′]dipyran-9-yl ester, [9R-[9α(Z),10α]]-
2H,8H-Benzo[1,2-b:3,4-b′]dipyran, 2-butenoic acid deriv.
Praeruptorin C
Wulongensin A