US PATENT SUBCLASS 435 / 43
.~ Preparing compound having a 1-thia-4-aza-bicyclo (3.2.0) heptane ring system (e.g., penicillin, etc.)

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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}
43.~ Preparing compound having a 1-thia-4-aza-bicyclo (3.2.0) heptane ring system (e.g., penicillin, etc.) {3}
44  DF  .~.~> By desacylation of the substituent in 6-position
45  DF  .~.~> By acylation of the substituent in 6-position
46  DF  .~.~> In presence of phenyl acetic acid or phenyl acetamide or their derivatives

DEFINITION

Classification: 435/43

Preparing compound having a 1- thia- 4- aza-bicyclo (3.2.0) heptane ring system (e.g., penicillin, etc.):

(under subclass 41) Processes wherein the product synthesized contains a 1-thia-4-aza-bicyclo (3.2.0) heptane polycyclic ring system, i.e., [figure]

(1) Note. The media of the processes included in subclass 45 must contain the 1-thia-4-aza-bicyclo heptane ring system compound.