Reaktion #46304

Reaktionsgleichung

11-(3-chloro-4-fluorobenzyl)-9-hydroxy-2-methyl-4-pyrrolidin-1-yl-3,4,5,6,12,13-hexahydro-2H[1,4]diazocino[2,1-a]-2,6-naphthyridine-1,8,10(11H)-trione

hydrogen bromide

acetic acid

→

title compound

11-(3-Chloro-4-fluorobenzyl)-9-hydroxy-2-methyl-5,6,12,13-tetrahydro-2H[1,4]diazocino[2,1-a]-2,6-naphthyridine-1,4,8,10(3H, 1H)-tetrone

Lösungsmittel

dioxane

Reaktionsbedingungen

Aufarbeitung

1. 1
   EinengenThe product mixture was concentrated under vacuum
2. 2
   workup.DISSOLUTIONThe residue was dissolved in DMSO
3. 3
   Wascheneluted with a 95-5% water-acetonitrile gradient
4. 4
   SonstigeCollection and lyophilization of appropriate fractions

Vorschrift

A mixture of 11-(3-chloro-4-fluorobenzyl)-9-hydroxy-2-methyl-4-pyrrolidin-1-yl-3,4,5,6,12,13-hexahydro-2H[1,4]diazocino[2,1-a]-2,6-naphthyridine-1,8,10(11H)-trione (40 mg, 0.08 mmol) and 33% hydrogen bromide in acetic acid (0.5 mL) in dioxane (1 mL) was stirred at room temperature for 1.5 hour. The product mixture was concentrated under vacuum. The residue was dissolved in DMSO and subjected to reverse phase column chromatography on C-18 stationary phase eluted with a 95-5% water-acetonitrile gradient. Collection and lyophilization of appropriate fractions afforded the title compound.

Quelle