2'-O-acetyl-10,11-didehydro-11-deoxy-3-O-descladinosyl-3-O-(3,4-methylenedioxy)phenylacetyl-6-O-methyl-erythromycin A 、
N,N'-羰基二咪唑 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 3.5h,
以55%的产率得到2'-O-acetyl-10,11-didehydro-11-deoxy-12-O-(1H-1-imidazolylcarbonyl)-3-O-descladinosyl-3-O-(3,4-methylenedioxy)phenylacetyl-6-O-methyl-erythromycin A