L-蛋氨酸甲酯盐酸盐 、 (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