HRID392028

反应详情

EQUATION

反应方程式

HRID 392028 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

CONDITIONS

反应条件

温度
50 °C

PROCEDURE

实验过程

Triethylamine (2 mL) was added to a DMF solution (30 mL) containing vancomycin hydrochloride (1 g), biotinlyated amine (biotin-hexanediamine-aminocaproic acid, 0.4 g), and N-hydroxybenzothiazole (200 mg). After addition of 1,3-dicyclohexylcarbodiimide (1.48 g), the mixture was heated at 50° C. for 10 h and then left at ambient temperature for overnight. The solvent was evaporated to dryness. The residue was eluted on a silica gel column firstly using ethyl acetate:methanol:dichloromethane:ammonium hydroxide (6:6:2:1.2 by volume), and then 5-7% by volume of ammonium hydroxide in methanol. The ammonium-methanol fractions containing vancomycin bidentate was pooled, and the solvent was evaporated to give the solid vancomycin bidentate (yield: 0.16 g).

WORKUP

后处理

  1. customThe solvent was evaporated to dryness
  2. washThe residue was eluted on a silica gel column firstly using ethyl acetate:methanol:dichloromethane:ammonium hydroxide (6:6:2:1.2 by volume)
  3. additionThe ammonium-methanol fractions containing vancomycin bidentate
  4. customthe solvent was evaporated