3S,5R-5-(N-t-butoxycarbonyl)aminomethyl-3-methyl-4,5-dihydro-2(3H)-furanone

(+)-3,5-dinitrobenzoic acid (2R,4S,5S,6S,7S)-6-(2-hydroxyethyl)-7-methoxymethoxymethyl-4,7-dimethyl-1-oxaspiro[4.4]non-2-ylmethyl ester

(4S,6E,10E,14S,15S)-14,15-epoxy-4-methoxycarbonyl-4,7,11,15-tetramethyl-1-triisopropylsiloxyheptadeca-6,10,16-triene-2-one

(3S,5R)-3-[(2E,6E)-3,7-Dimethyl-9-((2S,3S)-3-methyl-3-vinyl-oxiranyl)-nona-2,6-dienyl]-3-methyl-5-triisopropylsilanyloxymethyl-dihydro-furan-2-one

(R)-5-((S)-3-Benzenesulfonyl-6-{(6S,7R)-7-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-6,7-dimethyl-1,4-dioxa-spiro[4.5]dec-6-yl}-4-hydroxy-2-methyl-hexyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid benzyl ester