The allyl group for protection in carbohydrate chemistry. Part 20. Synthesis of 1<scp>L</scp>-1-O-methyl-myo-inositol [(+)-bornesitol] by resolution of (±)-1,2,4-tri-O-benzyl-myo-inositol
作者:Jill Gigg、Roy Gigg、Sheila Payne、Robert Conant
DOI:10.1039/p19870001757
日期:——
acetic anhydride-dimethyl sulphoxide gave the corresponding ketones, which were reduced with sodium borohydride to give the starting alcohols in good yield, thus providing suitable routes for the synthesis of isotopically labelled material. Racemic 1,2,4-tri-O-benzyl-5,6-O-isopropylidene-myo-inositol was resolved using (–)-ω-camphanic acid chloride to give, readily and in high yield (86%), the ω-camphanate
外消旋1,2,4-三-O-苄基-肌醇肌醇,由(±)-1,4-二-O-苄基-5,6-O-异亚丙基制备的由两个新的路线肌醇肌醇,一个途径涉及结晶中间体(±)-1 - O-烯丙基-3,6-二-O-苄基-4,5- O-异亚丙基-肌醇。后者和(±)氧化-1,2,4-三-O-苄基-5,6-O-异亚丙基肌醇肌醇与乙酸酐-二甲亚砜,得到相应的酮,将其用硼氢化钠还原以高收率得到起始醇,从而为合成同位素标记的物质提供了合适的途径。外消旋1,2,4-三-O-苄基-5,6- O-异亚丙基-肌( - ) -肌醇用解决ω-樟脑酰氯,得到,容易地和高产率(86%),1的ω-莰烷d -1,2,4-三ø -苄基-5, 6- ø异亚丙基肌肉肌醇,将其转化成1-大号-1- ö甲基肌醇肌醇[(+) -甲基肌醇]和1 d -1,2,4,5,6-五ø -苄基-肌醇已预先通过perbenzylated肌醇半乳糖苷的水解而获得的肌醇。