(S)-1-{(S)-3-[3-(tert-butyl-dimethyl-silanyloxy)-phenyl]-2-[(S)-2-((2R,3R)-3-methoxy-2-methyl-hept-6-enoylamino)-3-methyl-butyrylamino]-propionyl}-hexahydro-pyridazine-3-carboxylic acid [(R)-1-(3-vinyl-phenyl)-ethyl]-amide 在
Hoveyda-Grubbs catalyst second generation 氮气 、 silica gel 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 3.0h,
以to afford (E)-2R,5S,11S,14S,17R,18R)-11-[3-(tert-butyl-dimethyl-silanyloxy)-benzyl]-14-isopropyl-18-methoxy-2,17-dimethyl-3,9,12,15,28-pentaaza-tricyclo[21.3.1.1*5,9*]octacosa-1(27),21,23,25-tetraene-4, 10,13,16-tetraone (59 mg, 22%) as a gum的产率得到11-[3-(Tert-butyl-dimethyl-silanyloxy)-benzyl]-14-isopropyl-18-methoxy-2,17-dimethyl-3,9,12,15,28-pentaaza-tricyclo[21.3.1.1*5,9*]octacosa-1(27),21,23,25-tetraene-4, 10,13,16-tetraone