L-亮氨酸甲酯盐酸盐   、                                                                                      (2R,3R,4R,5S,6S)-6-[(2R,3S,4R,5R,6R)-2-[[(3S,4aR,6aR,6bS,8aS,11S,12aR,14bS)-11-carboxy-4,4,6a,6b,8a,11,14b-heptamethyl-14-oxo-2,3,4a,5,6,7,8,9,10,12,12a,14a-dodecahydro-1H-picen-3-yl]oxy]-6-carboxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid                                                                                                                                                              在
                                                                                                                                                                                 
N-羟基丁二酰亚胺   、                                                                                                  
三乙胺   、                                                                                                  
N,N'-二环己基碳二亚胺                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成