(2'S,3R,4R,5S)-3-(4'-benzyloxy-2'-tert-butyldimethylsilyloxy)butyl-4-N-phenyl-N-trifluoroacetamido-2,3,4,5-tetrahydro-5-methylfuran-2-one

(E)-(4R,12R,15S,16S,19R,20S,34R)-4,16-di-tert-butyldimethylsilyloxy-19,20-butanediacetal-6-en-8-yne-muricatetrocin C

(S)-3-((R)-2-(tert-Butyl-dimethyl-silanyloxy)-9-{(2R,5S)-5-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-3-((2R,3S,5R,6R)-3-dodecyl-5,6-dimethoxy-5,6-dimethyl-[1,4]dioxan-2-yl)-propyl]-tetrahydro-furan-2-yl}-nonyl)-5-methyl-5H-furan-2-one

(2'R,4R,5S)-3-(4'-benzyloxy-2'-hydroxybutylidene)-4-N-phenylaminodihydro-5-methylfuran-2-one

(2'R,4R,5S)-3-(4'-benzyloxy-2'-(tert-butyldimethylsilyloxy)butylidene)-4-N-phenylaminodihydro-5-methylfuran-2-one