(1S,2S,3S,4R)-3-[[(1S,2S,3S,4R)-3-(Allyl-tert-butoxycarbonyl-amino)-7-oxa-bicyclo[2.2.1]hept-5-en-2-ylmethyl]-(toluene-4-sulfonyl)-amino]-7-oxa-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid allyl ester 在
tri(cycloxexyl)phosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene][benzylidene]ruthenium(IV) dichloride 作用下,
以
二氯甲烷 为溶剂,
以10%的产率得到tert-butyl (1S,4S,5S,10R,12S,13Z,15R,17S,23S)-2-(4-methylphenyl)sulfonyl-22-oxo-11,16,21-trioxa-2,6-diazapentacyclo[13.8.0.04,12.05,10.017,23]tricosa-8,13,18-triene-6-carboxylate