| Synonyms: | (Z)-2-Methyl-2-butenoic acid [(9S,10S)-10β-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,2-b:3,4-b']dipyran]-9β-yl ester;9,10-Dihydro-9β-[(Z)-1-oxo-2-methyl-2-butenyloxy]-10β-(acetyloxy)-8,8-dimethyl-2H,8H-benzo[1,2-b:3,4-b']dipyran-2-one;benzo[1,2-b:3,4-b']dipyran-9-ylester, (2Z)-;(9S,10S)-10-acetyloxy-8,8-dimethyl-2-oxo-9,10-dihydropyrano[2,3-f]chromen-9-yl](Z)-2-methylbut-2-enoate;(+)-Praeruptorin A;2-Butenoic acid, 2-methyl-, (9S,10S)-10-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,2-b:3,4-b']dipyran-9-yl ester, (2Z)-;3,4-b'dipyran-9-ylester;3,4-b']dipyran-9-ylester, (2Z)- |