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A cyclic amide, or any compound containing it, formed by the intramolecular condensation of an amino carboxylic acid.


(Elements & Compounds) chem any of a group of inner amides, derived from amino acids, having the characteristic group -CONH-
[C20: from lact(one) + am(ide)]


(ˈlæk tæm)

any of a group of cyclic amides characterized by the NHCO group.
[1880–85; lact (one) + am (ide)]
References in periodicals archive ?
Beta Lactams to Emerge as the Most-Preferred Drug Class Compared to the various drug class, beta lactams is likely to emerge as one of the most preferred drug class between 2017 and 2026.
coli had highest resistance to penicillin and first generation cephalosporin followed by to second and third generation cephalosporins and monocyclic lactams. PCR revealed 73.2% (30/41) of E.
Mitim's product portfolio includes beta lactams in dry sterile powder for injectable solutions, tablets and oral suspensions.
* Group 2--animals treated with [beta] lactams for mastitis by intramamry application,
The results of this work indicated that beta lactams evaluated may delay the maturation of somatic embryos of the calli, or the course from globular stage to bipolar shoots.
Resistance to [beta]- lactam antibiotics: Resistance to penicillins and other [beta]- lactams in Gramnegative bacilli (prototype Escherichia coli) can occur by four general mechanisms.
Positive samples for Beta Lactams were found in multiple rooms as well as inside the ductwork prior to decontamination.
Steroidal-4-en-3-ones such as 4-cholesten-3-one were treated with ozone to obtain a keto acid, 3,5-seco-4-norcholestan-5-on-3-oic acid (I), subsequently treated with amines to obtain enamine lactams which were discovered to react with Grignard reagents at elevated temperatures to yield novel unsaturated 3-alkyl derivativatives.
INDEX TERMS: Pseudomonas aeruginosa, anti-Pseudomonas antibiotics, Beta Lactams.