(S)-1-{(S)-3-[3-(tert-butyl-dimethyl-silanyloxy)-phenyl]-2-[(S)-2-((R)-3-methoxy-hept-6-enoylamino)-3-methyl-butyrylamino]-propionyl}-hexahydro-pyridazin-3-carboxylic acid (R)-1-(3-vinyl-phenyl)-ethyl ester 在
Hoveyda-Grubbs catalyst second generation silica gel 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 1.5h,
以to give the title compound (54 mg, 46%) as a pale brown solid的产率得到(E)-(2R,5S,11S,14S,18R)-11-[3-(tert-butyl-dimethyl-silanyloxy)-benzyl]-14-isopropyl-18-methoxy-2-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