(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-8-isopropyl-12-methoxy-1,5-dimethyl-11-triisopropylsilanyloxymethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10,13-trien-2-yl ester

(E)-(1R,4S,5R,9R,11S,12S)-5-Isopropyl-1-methoxy-8,12-dimethyl-11-[(E)-3-(1-methyl-1H-imidazol-4-yl)-acryloyloxy]-15-oxa-tricyclo[10.2.1.04,9]pentadeca-2,7,13-triene-2-carboxylic acid ethyl ester

(E)-3-(1-methyl-1H-imidazol-4-yl)acrylic acid (1R,4aR,6R,10R,11R,12aR)-11-(2,2-dimethylpropionyloxy)-1-isopropyl-4-methyl-10-[tetrahydropyran-2-yloxy]-1,2,4a,5,6,7,10,11,12,12a-decahydrobenzocyclodecen-6-yl ester

(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-hydroxymethyl-8-isopropyl-12-methoxy-1,5-dimethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10-dien-2-yl ester

(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-8-isopropyl-12-methoxy-1,5-dimethyl-11-triisopropylsilanyloxymethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10-dien-2-yl ester