A lactam in which the amide bond is contained within a five-membered ring, which includes the amide nitrogen and the carbonyl carbon.
| Member | Definition | Role |
|---|
| 2-oxindole | An indolinone carrying an oxo group at position 2. | indolin-2-one |
| althiomycin | A peptide antibiotic isolated from soil and enteric bacteria. It is a protein synthesis inhibitor which exhibits antibacterial activity against both Gram-positive and Gram-negative bacteria. | althiomycin |
| indoprofen | A monocarboxylic acid that is propionic acid in which one of the hydrogens at position 2 is substituted by a 4-(1-oxo-1,3-dihydroisoindol-2-yl)phenyl group. Initially used as an anti-inflammatory and analgesic, it was withdrawn from the market due to causing severe gastrointestinal bleeding. It has been subsequently found to increase production of the survival motor neuron protein. | indoprofen |
| kt 5720 | An organic heterooctacyclic compound that is 1H,1'H-2,2'-biindole in which the nitrogens have undergone formal oxidative coupling to positions 2 and 5 of hexyl (3S)-3-hydroxy-2-methyltetrahydrofuran-3-carboxylate (the 2R,3S,5S product), and in which the 3 and 3' positions of the biindole moiety have also undergone formal oxidative coupling to positions 3 and 4 of 1,5-dihydro-2H-pyrrol-2-one. | KT 5720 |
| kt 5823 | An organic heterooctacyclic compound that is 1H,1'H-2,2'-biindole in which the nitrogens have undergone formal oxidative coupling to positions 2 and 5 of methyl (3R)-3-methoxy-2-methyltetrahydrofuran-3-carboxylate (the 2S,3R,5R product), and in which the 3 and 3' positions of the biindole moiety have also undergone formal oxidative coupling to positions 3 and 4 of 1-methyl-1,5-dihydro-2H-pyrrol-2-one. | KT 5823 |
| kt 5926 | An organic heterooctacyclic compound that is 5-propoxy-1H,1'H-2,2'-biindole in which the nitrogens have undergone formal oxidative coupling to positions 2 and 5 of methyl (3R)-3-hydroxy-2-methyltetrahydrofuran-3-carboxylate (the 2S,3R,5R product), and in which the 3 and 3' positions of the biindole moiety have also undergone formal oxidative coupling to positions 3 and 4 of 1,5-dihydro-2H-pyrrol-2-one. | KT 5926 |
| marizomib | A salinosporamide in which the core (1R)-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-dione skeleton is substituted at positions 1, 4, and 5 by (1S)-cyclohex-2-en-1-yl(hydroxy)methyl, 2-chloroethyl, and methyl groups, respectively (the 1R,4R,5S diastereoisomer). A potent proteasome inhibitor, it has attracted interest for potential use in the treatment of various cancers. | salinosporamide A |
| midostaurin | An organic heterooctacyclic compound that is the N-benzoyl derivative of staurosporine. | midostaurin |
| phthalimidine | A member of the class of isoindoles that is 2,3-dihydro-1H-isoindole in which the hydrogens at positon 1 are replaced by an oxo group. | isoindolin-1-one |
| piperlactam s | An organic heterotetracyclic compound that is dibenzo[cd,f]indol-4(5H)-one carrying two methoxy substituents at positions 1 and 5 as well as a hydroxy substituent at position 2. | piperlactam S |
| pyranonigrin a | A member of the class of pyranopyrroles that is 2-[(1E)-prop-1-en-1-yl]-6,7-dihydropyrano[2,3-c]pyrrole-4,5-dione carrying two additional hydroxy substituents at positions 3 and 7. Originally isolated from Aspergillus niger. | pyranonigrin A |
| sf 2370 | A organic heterooctacyclic compound that is a potent inhibitor of protein kinase C and is isolated from Nocardiopsis sp K-252a | K-252a |
| triptolide | | Triptolide |
| ucb 34714 | A non-proteinogenic amino acid derivative that is butanamide in which the pro-S hydrogen at position 2 is replaced by a (4R)-2-oxo-4-propylpyrrolidin-1-yl. Used for treatment of partial onset seizures related to epilepsy. | brivaracetam |