HRID1734377

反应详情

EQUATION

反应方程式

HRID 1734377 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-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2'"-phenyl-2'"-hydroxyethyloxy)-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 (40 mg) in cyclohexane (0.8 ml) and dichloromethane (0.4 ml) was added 2,2,2-benzyltrichloroacetimidate at 0° C. followed by triflic acid. The reaction was allowed to warm to room temperature and stir for 1.5 hours after which time it was poured into saturated aqueous sodium bicarbonate solution and extracted into ethyl acetate. The organic extracts were dried (MgSO4) and concentrated and the crude material was purified by column chromatography on silica gel eluting with 65% hexane:35% ethyl acetate to give the desired product (22 mg).

WORKUP

后处理

  1. extractionextracted into ethyl acetate
  2. dry with materialThe organic extracts were dried (MgSO4)
  3. concentrationconcentrated
  4. customthe crude material was purified by column chromatography on silica gel eluting with 65% hexane