(R)-9-(1,3-Benzodioxol-5-yl)-4,9-dihydro-7,8-dimethoxynaphtho(2,3-c)furan-1(3H)-one 1-(3',4'-Methylenedioxyphenyl)-3-hydroxymethyl-7,8-dimethoxy-3,4-dihydro-2-naphthoic acid lactone 71640-47-6 Naphtho(2,3-c)furan-1(3H)-one, 9-(1,3-benzodioxol-5-yl)-4,9-dihydro-7,8-dimethoxy-, (R)- beta-Apopolygamatin