6-cyclohexyl-4-hydroxy-6-[2-(4-hydroxyphenyl)ethyl]-5,6-dihydropyran-2-one 、
toluene-4-thiosulfonic acid S-(4-amino-2-tert-butyl-5-methylphenyl) ester hydrochloride 在
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
以62%的产率得到3-(4-amino-2-tert-butyl-5-methyl-phenylsulfanyl)-6-cyclohexyl-4-hydroxy-6-[2-(4-hydroxy-phenyl)-ethyl]-5,6-dihydro-pyran-2-one