반응 #1614755

반응 방정식

methyl 2-bromoacetate

1-{2-[(2S,4R)-2-(3-chloro-2-fluoro-benzylcarbamoyl)-4-fluoro-pyrrolidin-1-yl]-2-oxo-ethyl}-6-hydroxy-1H-indole-3-carboxylic acid amide

Cs2CO3

→

title compound

(3-Carbamoyl-1-{2-[(2S,4R)-2-(3-chloro-2-fluoro-benzylcarbamoyl)-4-fluoro-pyrrolidin-1-yl]-2-oxo-ethyl}-1H-indol-6-yloxy)-acetic acid methyl ester

용매

DMSO

반응 조건

후처리

1. 1
   workup.STIRRINGstirring at RT for 4 h
2. 2
   기타The mixture was partitioned between water and CH2Cl2
3. 3
   세척the organic phase was washed twice with brine (the combined aqueous washings
4. 4
   여과were filtered
5. 5
   기타the solid thus obtained
6. 6
   기타was dried in vacuo

실험 절차

A solution of 1-{2-[(2S,4R)-2-(3-chloro-2-fluoro-benzylcarbamoyl)-4-fluoro-pyrrolidin-1-yl]-2-oxo-ethyl}-6-hydroxy-1H-indole-3-carboxylic acid amide Example 578 (140 mg, 0.285 mmol) in DMSO (3 mL) was treated with Cs2CO3 (0.28 g, 0.85 mmol). The mixture was stirred at RT for 5 min, followed by addition of methyl 2-bromoacetate (0.039 mL, 0.428 mmol) and stirring at RT for 4 h. The mixture was partitioned between water and CH2Cl2, and the organic phase was washed twice with brine (the combined aqueous washings were filtered and the solid thus obtained was dried in vacuo to give an aliquot of the title compound), dried (phase separator) and concentrated under reduced pressure. Purification by preparative HPLC (SunFire C18-ODB, 5 μm, 30×100 mm, eluent: 20-100% CH3CN/H2O/20 min, 100% CH3CN/2 min, CH3CN and H2O containing 0.1% TFA, flow: 40 mL/min) afforded after lyophilization of the purified fractions the title compound as a white solid. MS: 563 [M+H]+; tR (HPLC conditions c): 4.17 min.

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