(R)-3-Hydroxy-3-methyl-5-(2,4,5-trimethyl-3,6-dioxo-cyclohexa-1,4-dienyl)-pentanoic acid methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙酸乙酯 为溶剂,
以100%的产率得到(R)-5-(2,5-Dihydroxy-3,4,6-trimethyl-phenyl)-3-hydroxy-3-methyl-pentanoic acid methyl ester