(1S,6E,9R,11R,12R,13S,16Z,19S,23R,25S,31S)-11-[(E)-1-iodoprop-1-en-2-yl]-12,31-dimethyl-21-methylidene-4,10,14,28,29,30-hexaoxa-32-azapentacyclo[23.3.1.12,5.19,13.119,23]dotriaconta-2,5(32),6,16-tetraen-15-one 、
三正丁基锡氰化物 在
copper(l) iodide 、
四(三苯基膦)钯 作用下,
以
苯 为溶剂,
以90%的产率得到(E)-3-[(1S,6E,9R,11R,12R,13S,16Z,19S,23R,25S,31S)-12,31-dimethyl-21-methylidene-15-oxo-4,10,14,28,29,30-hexaoxa-32-azapentacyclo[23.3.1.12,5.19,13.119,23]dotriaconta-2,5(32),6,16-tetraen-11-yl]but-2-enenitrile