Bioactive small molecules are organic compounds that have a low molecular weight (900 daltons). Most pharmaceutical drugs are small molecules. Larger structures such as nucleic acids, proteins, and many polysaccharides are not small molecules.
Cinnabarinic acid is an endogenous kynurenine metabolite formed from oxidative dimerization of 3-hydroxyanthranilic acid and transamination of 3-hydroxykynurenine. Cinnabarinic acid activates...
Simvastatin acid is the active β-hydroxy acid metabolite of simvastatin formed in vivo. Simvastatin acid is a potent inhibitor of 3-hydroxy-3-methylglutarylcoenzyme A (HMG-CoA) reductase, an...
Beauveriolides are 13-membered cyclodepsipeptides isolated from Beauveria sp. Beauveriolide III inhibits acyl-CoA:cholesterol acyltransferase (ACAT) to block the synthesis of cholesteryl ester,...
Beauveriolides are 13-membered cyclodepsipeptides isolated from Beauveria sp.. Beauveriolides I and III inhibit macrophage acyl-CoA:cholesterol acyltransferase (ACAT) activity to block the synthesis...
Anagyrine is a teratogenic quinolizidine alkaloid found in Lupinus sp. which undergoes metabolism to a piperidine that causes crooked calf syndrome. Anagyrine, but not lupanine or sparteine, directly...
Aminopterin is a 4-amino derivative of folic acid and a folic acid antagonist. It is a synthetic derivative of pterin. It has both mmunosuppressive properties and anti-cancer properties and can be...
Alternariol is a mycotoxin produced by Alternaria and is often found as a contaminant in fruit and small grain cereal products. Structurally, it is characterized as a dibenzopyranone. It can be...
Acetomycin, a γ-butyrolactone isolated from Streptomyces ramulosus, was first reported in 1958 by Ettlinger et al. at ETH Zurich. Acetomycin is potently active in vitro against HCT-8 human colon...
Acadesine was originally identified as a metabolite of Bacillus species and was shown to accumulate in the culture medium of E. coli under sulphonamide stasis. Acadesine is an adenosine-regulating...
17-Dimethylaminoethylamino-17-demethoxygeldanamycin (DMAG, alvespimycin) is a semi-synthetic derivative of the benzoquinone ansamycin antibiotic isolated from Streptomyces hygroscopicus in which the...
Sulfasalazine is a synthetic salicylic acid derivative and sulfonamide which can act as an antirhematic and gastrointestinal agent. It is formulated as a prodrug, and is metabolized into active...
Baloxavir Marboxil is a synthetic antiviral compound. It has activity against viruses causing influenza A and influenza B. It originated by Shionogi (Japan). It is a small molecule inhibitor of...
