C07D501/38 - CPC Classification

Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring; Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3 7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids with hydrocarbon radicals, substituted by hetero atoms or hetero rings, attached in position 3 Methylene radicals, substituted by nitrogen atoms; Lactams thereof with the 2-carboxyl group; Methylene radicals substituted by nitrogen-containing hetero rings attached by the ring nitrogen atom; Quaternary compounds thereof

• C07D501/40 » with the 7-amino radical acylated by an aliphatic carboxylic acid, which is substituted by hetero atoms 1
• C07D501/42 » with the 7-amino radical acylated by an araliphatic carboxylic acid 3
• C07D501/44 » with the 7-amino radical acylated by an araliphatic carboxylic acid, which is substituted on the aliphatic radical by hetero atoms 1
• C07D501/46 » with the 7-amino radical acylated by carboxylic acids containing hetero rings 41