(3R,5S)-1-[(2S)-2-cyclohexyl-2-[(4-pent-4-en-1-yl-1,3-thiazol-2-yl)amino]acetyl]-5-(methoxycarbonyl)pyrrolidin-3-yl-4-vinyl-1,3-dihydro-2H-isoindole-2-carboxylate 在
1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene[2-(i-propoxy)-5-(N,N-dimethylaminosulfonyl)phenyl]methyleneruthenium(II) dichloride 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 2.0h,
以180 mg的产率得到methyl (1R,12E,22S,25S)-22-cyclohexyl-3,23-dioxo-2-oxa-19-thia-4,21,24,28-tetraazapentacyclo[22.2.1.1(4,7).1(17,20).0(6,11)]nonacosa-6,8,10,12,17,20(28)-hexaene-25-carboxylate