(S)-2-{(1S,2R)-2-[(S)-(tert-Butyl-dimethyl-silanyloxy)-furan-3-yl-methyl]-2-methyl-3-oxo-cyclopentyl}-thiopropionic acid S-tert-butyl ester 在
mercury(II) trifluoroacetate 作用下,
以
乙腈 为溶剂,
以65%的产率得到(4S,4aR,7aS,8S)-4-(tert-Butyl-dimethyl-silanyloxy)-4a,8-dimethyl-4,4a,6,7,7a,8-hexahydro-azuleno[6,5-b]furan-5,9-dione