2-(4-methoxy-phenyl)-6-[2,2,4-trimethyl-6-(1-propyl-but-3-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxine-7,8-diol

2-methyl-but-2-enoic acid 7-(tert-butyl-dimethyl-silanyloxy)-2-(4-methoxy-phenyl)-6-[2,2,4-trimethyl-6-(1-propyl-but-3-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester

ipomoeassin B

2-methyl-but-2-enoic acid 3-(tert-butyl-dimethyl-silanyloxy)-5-[3-(dimethyl-phenyl-silanyl)-3-phenyl-acryloyloxy]-6-hydroxymethyl-2-[2,2,4-trimethyl-6-(1-propyl-but-3-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-tetrahydro-pyran-4-yl ester