HRID568241

反应详情

EQUATION

反应方程式

HRID 568241 的结构方程式

PROCEDURE

实验过程

Iodomethane (1.2 ml) is added to 113.3 mg of allyl(1R,5S,6S)-2-[(3S,5S)-1-allyloxycarbonyl-5-(imidazo[5,1-b]thiazol-2-yl)methylpyrrolidin-3-yl]thio-6-((1R)-1-hydroxyethyl)-1-methylcarbapen-2-em-3-carboxylate described in Example 23-a), and the mixture is stirred in an argon atmosphere in a light-shielded state at room temperature overnight. The excess reagent is removed by evaporation under reduced pressure, and the residue is purified by column chromatography on Sephadex LH-20 (dichloromethane:methanol=1:1) to give 84.6 mg of allyl(1R,5S,6S)-2-[(3S,5S)-1-allyloxycarbonyl-5-(6-methylimidazo[5,1-b]thiazolium-2-yl)methylpyrrolidin-3-yl]thio-6-((1R)-1-hydroxyethyl)-1-methylcarbapen-2-em-3-carboxylate iodide as a yellow viscous material.

WORKUP

后处理

  1. customThe excess reagent is removed by evaporation under reduced pressure
  2. customthe residue is purified by column chromatography on Sephadex