在
吡啶 、
copper(l) iodide 、 copper diacetate 作用下,
以
四氢呋喃 为溶剂,
以65%的产率得到N-[(1S,7R,12R,13R,19S,20Z)-21-bromo-19-[tert-butyl(dimethyl)silyl]oxy-4-chloro-13-hydroxy-9-oxo-12-tri(propan-2-yl)silyloxy-2,10-dioxa-5-azatricyclo[11.6.4.23,6]pentacosa-3,5,20,24-tetraen-15,17,22-triyn-7-yl]-7,8-dimethoxy-3-(methoxymethoxy)-6-propan-2-yloxynaphthalene-2-carboxamide