HRID1079265

反应详情

EQUATION

反应方程式

HRID 1079265 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A solution of 0.200 g (0.193 mmole) of 17-ethyl-1-hydroxy-12-[2'-(4"-[benzyloxycarbonylmethylidenyl]-3"-methoxycyclohexyl)-1'-methylvinyl]-14-tert-butyldimethylsilyloxy-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 in 5 mL of 10% (48% aqueous HF)-acetonitrile was stirred at room temperature for 8 hr. The reaction was quenched by addition of 5 mL of trimethylethoxy-silane and the solution was concentrated under vacuum. The residue was purified by flash chromatography (silica gel, 1.5 cm×10 cm) using 20% acetoneohexane and the product lyophilized from benzene to afford 0.152 g (85%) of the title compound as a colorless solid; NMR (CDCl3) indicated a 9:1 mixture of olefin isomers; MS (FAB) 921 (M+Li).

WORKUP

后处理

  1. customThe reaction was quenched by addition of 5 mL of trimethylethoxy-silane
  2. concentrationthe solution was concentrated under vacuum
  3. customThe residue was purified by flash chromatography (silica gel, 1.5 cm×10 cm)