Reaktion #62545

Reaktionsgleichung

4-Bromomethyl-5-methyl-1,3-dioxolene-2-one

sodium 7-[(Z)-2-methoxyimino-2-(thiazol-4-yl)acetamido]-3-(1,2,4-thiadiazol-5-yl)thiomethyl-3-cephem-4-carboxylate

→

title compound

Ausbeute 31.0%

(5-Methyl-2-oxo-1,3-dioxolen-4-yl)methyl-7-[(Z)-2-methoxyimino-2-(thiazol-4-yl)acetamido]-3-(1,2,4-thiadiazol-5-yl)thiomethyl-3-cephem-4-carboxylate

Ausbeute 31.0%

Lösungsmittel

N,N-dimethylformamide

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONThe reaction mixture was then treated in the same manner as in Example 14

Vorschrift

4-Bromomethyl-5-methyl-1,3-dioxolene-2-one (386 mg) was added to a solution of sodium 7-[(Z)-2-methoxyimino-2-(thiazol-4-yl)acetamido]-3-(1,2,4-thiadiazol-5-yl)thiomethyl-3-cephem-4-carboxylate (522 mg) in N,N-dimethylformamide (5 ml) at -5° C. and the mixture was stirred at this temperature for 1.3 hr. The reaction mixture was then treated in the same manner as in Example 14, giving the title compound (190 mg). ##STR39##

Quelle