(2-吡啶-2-基-苯并咪唑基-1-基)-乙酸 、 [(3R,4S,5R,6R)-6-(3-amino-4-hydroxy-8-methyl-2-oxochromen-7-yl)oxy-5-hydroxy-3-methoxy-2,2-dimethyloxan-4-yl] 5-methyl-1H-pyrrole-2-carboxylate 在
吡啶 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
四氢呋喃 、
水 为溶剂,
生成 (3R,4S,5R,6R)-5-hydroxy-6-((4-hydroxy-8-methyl-2-oxo-3-((2-oxo-2-(2-(pyridin-2-yl)-1H-benzo[d]imidazol-1-yl)ethyl)amino)-2H-chromen-7-yl)oxy)-3-methoxy-2,2-dimethyltetrahydro-2H-pyran-4-yl 5-methyl-1H-pyrrole-2-carboxylate