(S)-2-[(1S,2R)-2-hydroxy-1-methyl-3-butenyloxycarbonyl]-1-methylethyl (2E,4R,5S)-5-(N-acryloyl-N-benzylamino)-4-(2-methoxyethoxy)methoxy-2-hexenoate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以79%的产率得到(3S,6E,8R,9S,12E,14R,15S)-10-benzyl-14-hydroxy-8-(2-methoxyethoxy)methoxy-3,9,15-trimethyl-10-aza-4,16-dioxa-6,12-cyclohexadecadiene-1,5,11-trione