(S)-2-(1,4-dioxohexahydropyrrolo[1,2-a]pyrazin-3(Z)-ylidenemethyl)-5-methylhexa-2(Z),4-dienoic acid N-(2-iodophenyl)-N-[2-(trimethylsilyl)ethoxymethyl]amide

(S)-2-(1,4-dioxohexahydropyrrolo[1,2-a]pyrazin-3(Z)-ylidenemethyl)-5-methylhexa-2(E),4-dienoic acid, N-(2-iodophenyl)-N-[2-(trimethylsilyl)ethoxymethyl]amide

(2R,3R,5aS)-3-(2-methylprop-1-en-1-yl)-1'-((2-(trimethylsilyl)ethoxy)methyl)-5a,6,7,8-tetrahydro-3H,5H,10H-spiro[dipyrrolo[1,2-a:1',2'-d]pyrazine-2,3'-indoline]-2',5,10-trione

(2S,3S,5aS)-3-(2-methylprop-1-en-1-yl)-1'-((2-(trimethylsilyl)ethoxy)methyl)-5a,6,7,8-tetrahydro-3H,5H,10H-spiro[dipyrrolo[1,2-a:1',2'-d]pyrazine-2,3'-indoline]-2',5,10-trione

2-acetoxymethyl-5-methyl-2(E),5-dienoic acid methyl ester