(3RS,5S)-3-ethoxycarbonyl-5-(2-methylpropyl)-1-toluene-p-sulphonylpyrrolidin-2-one

(5S)-1-benzoyl-3-(3-((4S,5S)-5-((5E,7E)-3,7-dimethylnona-3,5,7-trien-1-yl)-2,2-dimethyl-1,3-dioxolan-4-yl)propanoyl)-5-isobutylpyrrolidin-2-one

(17S,18S)-17,18-isopropylidenedioxy-14-methyl-20-phenylseleno-10-prop-2'-yl-[11]cytochalasa-6(7),13Z,-diene-1,21-dione

(5R)-5-(2-methylpropyl)pyrrolidin-2-one