(4S,1'E)-4-(3'-hydroxy-2'-methylprop-1'-enyl)azetidin-2-one

(3S,4R,1'E,2''R,3''S)-4-(3'-tert-butyldimethylsilyloxy-2'-methylprop-1'-ethyl)-3-<3'',4''-di(tert-butyldimethylsilyloxy)-2''-methyl-1''-oxobutyl>-3-methylazetidin-2-one

(3S,4R,1'E,2''R,3''S)-1-(tert-butyldimethylsilyl)-4-(3'-tert-butyldimethylsilyloxy-2'-methylprop-1'-ethyl)-3-<3'',4''-di(tert-butyldimethylsilyloxy)-2''-methyl-1''-oxobutyl>-3-methylazetidin-2-one

<4R-<4α(2E,4E),4aβ,7α(2S*,3E,5E),8β,8aβ>>-5-<hexahydro-7-<7-chloro-5-methyl-2-<<(1,1-dimethylethyl)dimethylsilyl>oxy>-3,5-heptadienyl>-4a,8-dimethyl-2,5-dioxo-2H,5H-pyrano<3,4-e>-1,3-oxazin-4-yl>-4-methyl-2,4-pentadienal

<4R-<4α(2E,4E),4aβ,7α(2S*,3E),8β,8aβ>>-1H-imidazole-1-carboxylic acid 5-<hexahydro-7-<4-iodo-2-<(4-methoxyphenyl)methoxy>-3-butenyl>-4a,8-dimethyl-2,5-dioxo-2H,5H-pyrano<3,4-e>-1,3-oxazin-4-yl>-4-methyl-2,4-pentadienyl ester

(3S,4R,2'R,3'R,1''E)-3-(3'-hydroxy-2'-methyl-1'-oxohex-5'-enyl)-4-(3''-hydroxy-2''-methylprop-1''-enyl)-3-methyl-1-oxopropylazetidin-2-one

<3S-<3α(1R*,2R*,3S*,5R*,6E),4β(1E,3E)>>-1-<(1,1-dimethylethyl)dimethylsilyl>-4-<5-<<(1,1-dimethylethyl)dimethylsilyl>oxy>-2-methyl-1,3-pentadienyl>-3-<3-<<(1,1-diphenylethyl)dimethylsilyl>oxy>-1-hydroxy-7-iodo-5-<(4-methoxyphenyl)methoxy>-2-methyl..>.