137219-37-5 2-9-Didemnin B, 2-(1-(1,2-dioxopropyl)-L-proline)- Aplidine Dehydrodidemnin B Didemnin A, N-(1-(1,2-dioxopropyl)-L-prolyl)- L-Tyrosine, 1-(1,2-dioxopropyl)-L-prolyl-N-methyl-D-leucyl-L-threonyl-(3S,4R,5S)-4-amino-3-hydroxy-5-methylheptanoyl-(2S,4S)-4-hydroxy-2,5-dimethyl-3-oxohexanoyl-L-leucyl-L-prolyl-N,O-dimethyl-, (8-3)-lactone