反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
To a solution of 17-ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2"'-phenyl-2"'-oxoethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9 ]octacos-18-ene-2,3,10,16-tetraone (350 mg) in THF (6.2 ml) at -78° C. was added L-Selectride (342 μl, 1 eq.) dropwise over 30 minutes. The reaction was stirred for a further 15 minutes after addition and then quenched by pouring into saturated aqueous ammonium chloride solution and extracted into ethyl acetate. The organic phase was dried with magnesium sulphate and concentrated. The crude material was purified by column chromatography on silica gel eluting with 60% hexane:40% ethyl acetate to give the desired product (216 mg).
WORKUP
后处理
- additionafter addition
- customquenched
- additionby pouring into saturated aqueous ammonium chloride solution
- extractionextracted into ethyl acetate
- dry with materialThe organic phase was dried with magnesium sulphate
- concentrationconcentrated
- customThe crude material was purified by column chromatography on silica gel eluting with 60% hexane