{4,5-Dihydroxy-3-[(R)-1-((1S,2S)-2-hydroxy-1-methyl-propoxy)-3-oxo-pentyl]-9,10-dioxo-9,10-dihydro-anthracen-2-yl}-acetic acid 2-trimethylsilanyl-ethyl ester 在
敌草腈 作用下,
以
四氢呋喃 为溶剂,
反应 6.0h,
以75%的产率得到(1S,2R,4R)-2-Ethyl-2,5,7-trihydroxy-4-((1S,2S)-2-hydroxy-1-methyl-propoxy)-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacene-1-carboxylic acid 2-trimethylsilanyl-ethyl ester