(S)-1-{(S)-3-[3-(tert-butyl-dimethyl-silanyloxy)-phenyl]-2-[(S)-2-((2R,3R)-3-ethoxy-2-methyl-hept-6-enoylamino)-3-methyl-butyrylamino]-propionyl}-hexahydro-pyridazine-3-carboxylic acid 3-vinyl-benzyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 1.5h,
以66%的产率得到(E)-(5S,11S,14S,17R,18R)-11-[3-(tert-butyl-dimethyl-silanyloxy)-benzyl]-18-ethoxy-14-isopropyl-17-methyl-3-oxa-9,12,15,28-tetraaza-tricyclo[21.3.1.1*5,9*]octacosa-1(26),21,23(27),24-tetraene-4,10,13,16-tetraone