(2S)-2-[[(2S)-2-[[(2S)-4-[[(2R,3R,4R,5S,6R)-3-acetamido-5-[(2S,3R,4R,5S,6R)-3-acetamido-4,5-diacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4-acetyloxy-6-(acetyloxymethyl)oxan-2-yl]amino]-2-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxobutanoyl]amino]propanoyl]amino]-3-hydroxybutanoic acid   、                                                                                      
L-Alanyl-L-serin-allylester-hydrochlorid                                                                                                                                                                                                                                                                                                          以55%的产率得到