6-{4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-phenyl }-3-(2-tert-butyl-5-methyl-phenylsulfanyl)-4-hydroxy-6-phenethyl-5,6-dihydro-pyran-2-one 、
四丁基氟化铵 在
silica gel 、
甲醇 、
正己烷 作用下,
以
四氢呋喃 为溶剂,
以(50% Hexane-50% CH2Cl2) (1:99 to 5:95) gave the title compound, m.p. 154-156° C.的产率得到3-(2-tert-Butyl-5-methyl-phenylsulfanyl)-4-hydroxy-6-[4-(2-hydroxy-ethoxy)-phenyl]-6-phenethyl-5,6-dihydro-pyran-2-one