HRID66316

反应详情

EQUATION

反应方程式

HRID 66316 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A solution of 3.5 g of ethyl 1-[N2 -(2-phenoxathiinylsulfonyl)-L-arginyl]-4-methyl-2-piperidinecarboxylate in 15 ml of methanol and 10 ml of 2N-NaOH solution was warmed to 30° C and held at that temperature for 10 hours. At the end of this period, the reaction mixture was concentrated and chromatographed on 200 ml of Daiaion® SK 102 ion exchange resin (200-300 mesh, H+ form, manufactured by Mitsubishi Chemical Industries Limited) packed in water, washed with ethanol-water (1:4) and eluted with ethanol-water-NH4OH (10:9:1). The main fraction was evaporated to dryness and washed with ether to give 1.0 g of 1-[N2 -(2-phenoxathiinylsulfonyl)-L-arginyl]-4-methyl-2-piperidinecarboxylic acid as an amorphous solid. I.R. (KBr): 3400, 1625, 1460, 1165 cm-1.

WORKUP

后处理

  1. concentrationAt the end of this period, the reaction mixture was concentrated
  2. customchromatographed on 200 ml of Daiaion® SK 102 ion exchange resin (200-300 mesh, H+ form, manufactured by Mitsubishi Chemical Industries Limited)
  3. washwashed with ethanol-water (1:4)
  4. washeluted with ethanol-water-NH4OH (10:9:1)
  5. customThe main fraction was evaporated to dryness
  6. washwashed with ether