在
cobalt,triphenylphosphane,chloride 作用下,
以
丙酮 为溶剂,
反应 1.5h,
以55%的产率得到tert-butyl (1S,4S,7S,9R)-4-[[tert-butyl(dimethyl)silyl]oxymethyl]-9-[(1S,4S,7S,9R)-4-[[tert-butyl(dimethyl)silyl]oxymethyl]-4,7-dihydroxy-5-methyl-16-[(2-methylpropan-2-yl)oxycarbonyl]-3,6-dioxo-2,5,16-triazatetracyclo[7.7.0.02,7.010,15]hexadeca-10,12,14-trien-9-yl]-4,7-dihydroxy-5-methyl-3,6-dioxo-2,5,16-triazatetracyclo[7.7.0.02,7.010,15]hexadeca-10,12,14-triene-16-carboxylate