乙烯 、
(1S,2S,3S,4R)-3-{[(1S,2S,3S,4R)-3-(Allyl-tert-butoxycarbonyl-amino)-7-oxa-bicyclo[2.2.1]hept-5-ene-2-carbonyl]-benzyl-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,
反应 24.0h,
以7%的产率得到(2S,3S,3aS,7aR)-3-[Benzyl-((2R,3S,3aS,8aS)-4-oxo-2-vinyl-2,3,3a,4,6,8a-hexahydro-furo[3,2-c]oxepin-3-yl)-carbamoyl]-2-vinyl-3,3a,5,7a-tetrahydro-2H-furo[3,2-b]pyridine-4-carboxylic acid tert-butyl ester