ML 23 is a melatonin analogue in the treatment and management of Parkinson's disease. ML-23 is a potential clinical candidate for the treatment of PD, and the present study has been undertaken to determine the efficacy of ML-23 in the 1-methyl-4-phenyl, 1
ML230 is a selective ATP-binding cassette (ABC) transporter ABCG2 inhibitor. It 36-fold selective for ABCG2 over ABCB1 (EC50s: 0.13 μM and 4.65 μM, respectively).
ML233 is a potent non-peptide apelin receptor agonist (EC50 = 3.7 μM) that exhibits more than 21-fold selectivity over the closely related angiotensin 1 receptor (AT1) (>79 μM) [1].
HT-2 Toxin-13C22 is intended for use as an internal standard for the quantification of HT-2 toxin by GC- or LC-MS. HT-2 toxin is a type A trichothecene mycotoxin and an active,deacetylated metabolite of the trichothecene mycotoxin T-2 toxin .1,2Like T-2 toxin,HT-2 toxin inhibits protein synthesis and cell proliferation in plants.2HT-2 toxin also reduces viability of HepG2,A549,HEp-2,Caco-2,A-204,U937,Jurkat,and RPMI-8226 cancer cells with IC50values ranging from 3.1 to 23 ng/ml and human umbilical vein endothelial cells with an IC50value of 56.4 ng/ml.1It induces oxidative stress,DNA damage,and autophagy in,as well as halts the development of,cultured mouse embryos when used at a concentration of 10 nM.3HT-2 toxin has been found in cereal grains and food products.4,5
3-Hydroxyterphenyllin is a p-terphenyl fungal metabolite originally isolated from A. candidus that has diverse biological activities, including antioxidant, antiproliferative, antibacterial, and antiviral properties.1,2,3,4 It has a 96% scavenging effect on 2,2-diphenyl-1-picrylhydrazyl radicals when used at a concentration of 100 μg/ml.2 3-Hydroxyterphenyllin inhibits the growth of HeLa cervical, A549 lung, and HepG2 liver cancer cells (IC50s = 23, 36, and 32 μM, respectively), as well as methicillin-resistant S. aureus (MRSA) and V. vulnificus bacteria (MIC = 31 μg/ml for both).3 It also inhibits HIV-1 integrase in both coupled and strand transfer assays (IC50s = 2.8 and 12.1 μM, respectively).4References1. Kurobane, I., Vining, L.C., McInnes, A.G., et al. 3-Hydroxyterphenyllin, a new metabolite of Aspergillus candidus. Structure elucidation by 1H and 13C nuclear magnetic resonance spectroscopy. J. Antibiot. (Tokyo) 32(6), 559-564 (1979).2. Yen, G.-C., Chang, Y.-C., Sheu, F., et al. Isolation and characterization of antioxidant compounds from Aspergillus candidus broth filtrate. J. Agric. Food Chem. 49(3), 1426-1431 (2001).3. Wang, W., Liao, Y., Tang, C., et al. Cytotoxic and antibacterial compounds from the coral-derived fungus Aspergillus tritici SP2-8-1. Mar. Drugs 15(11), E348 (2017).4. Singh, S.B., Jayasuriya, H., Dewey, R., et al. Isolation, structure, and HIV-1-integrase inhibitory activity of structurally diverse fungal metabolites. J. Ind. Microbiol. Biotechnol. 30(12), 721-731 (2003).
3-Hydroxyterphenyllin is a p-terphenyl fungal metabolite originally isolated from A. candidus that has diverse biological activities, including antioxidant, antiproliferative, antibacterial, and antiviral properties.1,2,3,4 It has a 96% scavenging effect on 2,2-diphenyl-1-picrylhydrazyl radicals when used at a concentration of 100 μg/ml.2 3-Hydroxyterphenyllin inhibits the growth of HeLa cervical, A549 lung, and HepG2 liver cancer cells (IC50s = 23, 36, and 32 μM, respectively), as well as methicillin-resistant S. aureus (MRSA) and V. vulnificus bacteria (MIC = 31 μg/ml for both).3 It also inhibits HIV-1 integrase in both coupled and strand transfer assays (IC50s = 2.8 and 12.1 μM, respectively).4
References1. Kurobane, I., Vining, L.C., McInnes, A.G., et al. 3-Hydroxyterphenyllin, a new metabolite of Aspergillus candidus. Structure elucidation by 1H and 13C nuclear magnetic resonance spectroscopy. J. Antibiot. (Tokyo) 32(6), 559-564 (1979).2. Yen, G.-C., Chang, Y.-C., Sheu, F., et al. Isolation and characterization of antioxidant compounds from Aspergillus candidus broth filtrate. J. Agric. Food Chem. 49(3), 1426-1431 (2001).3. Wang, W., Liao, Y., Tang, C., et al. Cytotoxic and antibacterial compounds from the coral-derived fungus Aspergillus tritici SP2-8-1. Mar. Drugs 15(11), E348 (2017).4. Singh, S.B., Jayasuriya, H., Dewey, R., et al. Isolation, structure, and HIV-1-integrase inhibitory activity of structurally diverse fungal metabolites. J. Ind. Microbiol. Biotechnol. 30(12), 721-731 (2003).
Galbinic acid is a depsidone lichen metabolite that has been found in U. undulata.1,2 It is active against the Gram-positive bacteria B. cereus, B. subtilis, and S. aureus, but not S. epidermidis (MICs = 62.5, 62.5, 250, and >250 μg/ml, respectively), as well as the Gram-negative bacterium E. coli, but not S. sonnei (MICs = 125 and >250 μg/ml, respectively).3
|1. Salgado, F., Albornoz, L., Cortéz, C., et al. Secondary metabolite profiling of species of the genus Usnea by UHPLC-ESI-OT-MS-MS. Molecules 23(1), E54 (2017).|2. Elix, J.A., and Engkaninan, U. The structure of galbinic acid. A depsidone from the lichen Usnea undulata. Aust. J. Chem. 28(8), 1793-1797 (1975).|3. Sultana, N., and Afolayan, A.J. A new depsidone and antibacterial activities of compounds from Usnea undulata Stirton. J. Asian Nat. Prod. Res. 13(12), 1158-1164 (2011).
LEO 39652 is a dual-soft PDE4 inhibitor with IC50s of 1.2 nM, 1.2 nM, 3.0 nM and 3.8 nM for PDE4A, PDE4B, PDE4C and PDE4D, respectively. LEO 39652 also inhibits TNF-α with an IC50 value of 6.0 nM. LEO 39652 is used for topical research of Atopic dermatitis (AD) [1].
LEO 39652 shows unbound in vitro potency when measured as LPS induced TNF-α release in human peripheral blood mononuclear cells (PBMC), incubated in serum free medium. LEO 39652 shows a relatively high binding to human serum albumin[2].
LEO 39652 is inactivated both in blood and liver (dual-soft) while stabled in the skin[1].Pharmacokinetic AnalysisLEO 39652 exhibits total clearance (rats 930, minipigs 200 and monkey 300 mL/min/kg) and ratio to total AUC (rats 4, minipigs 6 and monkey 6 %) following intravenous administration (rats 0.075, minipigs 0.5 and monkeys 2.0 mg/kg)[1].
[1]. Jens Larsen, et al. Discovery and Early Clinical Development of Isobutyl 1-[8-Methoxy-5-(1-oxo-3 H-isobenzofuran-5-yl)-[1,2,4]triazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxylate (LEO 39652), a Novel Dual-Soft" PDE4 Inhibitor for Topical Treatment of Atopic Dermatitis. J Med Chem. 2020 Dec 10;63(23):14502-14521.[2]. Stefan Eirefelt
Papyracillic acid is a fungal metabolite and a derivative of penicillic acid originally isolated fromL. papyraceumand has antibiotic, antifungal, and phytotoxic activities.1,2It is active against the bacteriaX. campestrisandB. subtilisand the fungusC. tropicalisin a disc assay when used at a concentration of 5 μg/disc.2Papyracillic acid (1 mg/ml) induces necrotic lesion formation in a panel of 10 plants.
1.Shan, R., Anke, H., Stadler, M., et al.Papyracillic acid, a new penicillic acid analogue from the Ascomycete Lachnum papyraceumTetrahedron52(30)10249-10254(1996) 2.Evidente, A., Berestetskiy, A., Cimmino, A., et al.Papyracillic acid, a phytotoxic 1,6-dioxaspiro[4,4]nonene produced by Ascochyta agropyrina Var. nana, a potential mycoherbicide for Elytrigia repens biocontrolJ. Agric. Food Chem.57(23)11168-11173(2009)