Sodium Hydroxide → 6-{[2-Tetrahydrofuranylamino(4-hydroxyphenyl)acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid sodium salt

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a stirred suspension of 6.28 g (0.015) mol) of amoxicillin trihydrate in 150 ml of distilled water was added in one portion 15 ml of 1 N aqueous sodium hydroxide solution. The amoxicillin quickly dissolved and after two minutes 2.25 g (0.025 mol) of tetrahydro-2-furanol was added. After stirring at 25° C. for two minutes the solution was quickly frozen by means of a dry ice-acetone bath and then lyophilized for 22 hr. The resulting product {2S-[2α, 5α, 6β(S*)]}-6-{[2-tetrahydrofuranylamino(4-hydroxyphenyl)acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid sodium salt (6.55 g) was obtained as a white powder.

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