HRID744771

反应详情

EQUATION

反应方程式

HRID 744771 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

150 m g of N-tert-butoxycarbonyl-2-methylene-4(S)-hydroxy-5(S)-amino-7(S)-isopropyl-8-(p-tert-butyl-phenyl)-octanoic acid (N-butyl)amide (diastereoisomer I) are hydrogenated in the presence of 150 mg of 10% Pd/C in 20 ml of tetrahydrofuran for 2 hours at room temperature and under normal pressure. The reaction mixture is filtered and concentrated by evaporation. The residue is purified by means of FC (50 g of silica gel, dichloromethane/diethyl ether=8:2). The title compound is obtained in the form of a diastereoisomeric mixture: Rf (dichloromethane/diethyl ether=8:2)=0.18.

WORKUP

后处理

  1. filtrationThe reaction mixture is filtered
  2. concentrationconcentrated by evaporation
  3. customThe residue is purified by means of FC (50 g of silica gel, dichloromethane/diethyl ether=8:2)