(2S,2'R)-2-<<3'<(tert-butoxycarbonyl)amino>-2'-methylpropanoyl>oxy>-4-methylpentanoic acid

(E)-(5S,6S,7R,8R)-5-[(S)-2-((R)-3-tert-Butoxycarbonylamino-2-methyl-propionyloxy)-4-methyl-pentanoylamino]-8-(tert-butyl-dimethyl-silanyloxy)-7-hydroxy-6-methyl-8-phenyl-oct-2-enoic acid allyl ester

(S)-2-((R)-3-Amino-2-methyl-propionyloxy)-4-methyl-pentanoic acid (E)-(1S,2R)-1-{(E)-3-[(R)-1-carboxy-2-(4-methoxy-phenyl)-ethylcarbamoyl]-allyl}-2-methyl-4-phenyl-but-3-enyl ester

2-(3-tert-butoxycarbonylamino-2-methyl-propionyloxy)-4-methyl-pentanoic acid 4-[2-(3-chloro-4-methoxy-phenyl)-1-(2,2,2-trichloro-ethoxycarbonyl)-ethylcarbamoyl]-1-[1-(2,2-dimethyl-5-phenyl-[1,3]dioxolan-4-yl)-ethyl]-but-3-enyl ester

cryptophycin 226

2-[5-[2-(3-tert-butoxycarbonylamino-2-methyl-propionyloxy)-4-methyl-pentanoylamino]-8-(tert-butyl-dimethyl-silanyloxy)-7-hydroxy-6-methyl-8-phenyl-oct-2-enoylamino]-3-(3-chloro-4-methoxy-phenyl)-propionic acid 2,2,2-trichloro-ethyl ester

(E)-(5S,6S,7R,8R)-5-[(S)-2-((R)-3-tert-Butoxycarbonylamino-2-methyl-propionyloxy)-4-methyl-pentanoylamino]-8-(tert-butyl-dimethyl-silanyloxy)-7-hydroxy-6-methyl-8-phenyl-oct-2-enoic acid