HRID1656282

反应详情

EQUATION

反应方程式

HRID 1656282 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

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 (1.0 g) in dry methylene chloride (14 ml) was added 2,6-lutidine (240 μl) and the mixture was stirred at room temperature. After 10 minutes, tert-butyldimethylsilyl trifluoromethanesulfonate (295 μl) was added via syringe. After 15 minutes the reaction mixture was diluted with ethyl acetate, washed with 1N HCl, water, saturated sodium bicarbonate and brine. The organic phase was dried over magnesium sulfate. Removal of the solvent in vacuo and flash chromatography on silica gel (ethyl acetate:hexane (1:3)+1% methanol) gave the title compound (293 mg). 1H NMR consistent with the desired structure.

WORKUP

后处理

  1. washwashed with 1N HCl, water, saturated sodium bicarbonate and brine
  2. dry with materialThe organic phase was dried over magnesium sulfate
  3. customRemoval of the solvent in vacuo and flash chromatography on silica gel (ethyl acetate:hexane (1:3)+1% methanol)