Previridicatumtoxin is a fungal metabolite that has been found inP. aethiopicumand has diverse biological activities.1,2It is an intermediate in the biosynthesis of the mycotoxin viridicatumtoxin . Previridicatumtoxin is active against methicillin-resistantS. aureus(MRSA) and vancomycin-resistantE. faecalis(IC50s = 4.4 and 4.8 μM, respectively), as well asC. albicansandS. cerevisiae(MIC = 32 μg ml for both).2,1It is cytotoxic to NCI H460, KB-3-1, and SW620 cancer cells (IC50s = 5.3, 4.1, and 6 μM, respectively).2 1.Chooi, Y.H., Wang, P., Fang, J., et al.Discovery and characterization of a group of fungal polycyclic polyketide prenyltransferasesJ. Am. Chem. Soc.134(22)9428-9437(2012) 2.Shang, Z., Salim, A.A., Khalil, Z., et al.Viridicatumtoxins: Expanding on a rare tetracycline antibiotic scaffoldJ. Org. Chem.80(24)12501-12508(2015)
Amycolatopsin A is a macrolide polyketide originally isolated fromAmycolatopsisthat has antimycobacterial and anticancer activities.1It is active againstM. bovisandM. tuberculosis(IC50s = 0.4 and 4.4 μM, respectively) but notB. subtilis,S. aureus,E. coli, orP. aeruginosa(IC50s = >30 μM for all). Amycolatopsin A is cytotoxic to SW620 colorectal and NCI H460 lung cancer cells (IC50s = 0.08 and 1.2 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)
Amycolatopsin B is a bacterial metabolite originally isolated fromAmycolatopsisthat has anticancer activity.1It is cytotoxic to NCI H460 lung and SW620 colon cancer cells (IC50s = 0.28 and 0.14 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)
Amycolatopsin C is a polyketide macrolide originally isolated fromAmycolatopsisthat has antimycobacterial and anticancer activities.1It is active againstM. bovisandM. tuberculosis(IC50s = 2.7 and 5.7 μM, respectively) but notB. subtilis,S. aureus,E. coli, orP. aeruginosa(IC50s = >30 μM for all). Amycolatopsin C is cytotoxic to SW620 colorectal and NCI H460 lung cancer cells (IC50s = 10 and 5.9 μM, respectively). 1.Khalil, Z.G., Salim, A.A., Vuong, D., et al.Amycolatopsins A-C: Antimycobacterial glycosylated polyketide macrolides from the Australian soil Amycolatopsis sp. MST-108494J. Antibiot. (Tokyo)70(12)1097-1103(2017)