HRID248255
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-1,14-dihydroxy-12-[2'-(3",4"-dihydroxycyclohexyl)-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 (200 mg) in ether (6 ml) is added boron trifluoride etherate (10 μl) followed by freshly prepared 2-diazopropane (100 fold excess). The mixture is stirred at room temperature for 15 min and quenched with sat'd. aqueous sodium bicarbonate solution. The organic layer is separated, washed (sat'd. aqueous NaCl) and dried over anhydrous magnesium sulfate. Removal of solvent followed by preparative tlc on silica gives the title compound and its 4"-isomer.
WORKUP
后处理
- customquenched with sat'd
- customThe organic layer is separated
- washwashed (sat'd. aqueous NaCl)
- dry with materialdried over anhydrous magnesium sulfate
- customRemoval of solvent