US PATENT SUBCLASS 435 / 50
.~.~ By acylation of the substituent in the 7-position

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
47  DF  .~ Preparing compound having a 1-thia-5-aza-bicyclo (4.2.0) octane ring system (e.g., cephalosporin, etc.) {4}
50.~.~ By acylation of the substituent in the 7-position

DEFINITION

Classification: 435/50

By acylation of the substituent in the 7-position:

(under subclass 47) Processes wherein the product synthesized is prepared by amide bond formation, present with the nitrogen attached at the 7-position.