US PATENT SUBCLASS 514 / 200
.~.~ 1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
183  DF  .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16}
200.~.~ 1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.) {4}
201  DF  .~.~.~> 7,7-di-substituted
202  DF  .~.~.~> Additional hetero ring {2}
208  DF  .~.~.~> Sulfur containing substituent
209  DF  .~.~.~> Alkyl, hydroxyalkyl, alkoxyalkyl, or alkanoyloxyakyl bonded directly to 3-position

DEFINITION

Classification: 514/200

1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.):

(under subclass 183) Subject matter wherein the heterocyclic compound contains a 1-thia-5-aza-bicyclo (4.2.0.) octane ring

system having the following structure, illustrated below, and may contain double bond between ring members, e.g., cephalosporin, etc. [figure]

(1) Note. The Ring Index uses a different system for numbering the ring members. However, in the indents hereunder which refer to positions, the numbers shown in the definition are employed.