Taniguchi lactone. It was converted into diastereomeric amides with (S)-1-phenylethylamine for stereoisomer resolution. The double bonds of (±)-, (R)- and (S)-Taniguchi lactones were brominated and dehydrobrominated in two steps, using at first DBU and then LDA, to deliver the triple bonds. cis-2-Butene-1,4-diol was heated with triethyl orthoacetate and p-hydroquinone as catalyst at 170 °C to give racemic
摘要 将顺式-
2-丁烯-1,4
-二醇与
原乙酸三乙酯和对
氢醌作为催化剂在170°C下加热,得到外消旋的谷口内酯。用(S)-1-苯
乙胺将其转化为非对映体酰胺,用于拆分立体异构体。(±)-,(R)-和(S)-谷口内酯的双键分两步进行
溴化和脱氢
溴化,首先使用
DBU,然后使用
LDA,以递送三键。 将顺式-
2-丁烯-1,4
-二醇与
原乙酸三乙酯和对
氢醌作为催化剂在170°C下加热,得到外消旋的谷口内酯。用(S)-1-苯
乙胺将其转化为非对映体酰胺,用于拆分立体异构体。(±)-,(R)-和(S)-谷口内酯的双键分两步进行
溴化和脱氢
溴化,首先使用
DBU,然后使用
LDA,以递送三键。