Preparation

Full Title

Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula: [IMAGE cpc-sch-C07D-0992.gif] , e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring > Preparation

Child Classifications

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• C07D 499/06 by forming the ring or condensed ring systems (by microbiological processes C12P37/00)
• C07D 499/08 Modification of a carboxyl radical directly attached in position 2, e.g. esterification
• C07D 499/10 Modification of an amino radical directly attached in position 6
• C07D 499/14 Preparation of salts
• C07D 499/18 Separation; Purification