112900-76-2Relevant articles and documents
Synthesis and anti-cancer activity of naturally occurring 2,5-diketopiperazines
Mollica, Adriano,Costante, Roberto,Fiorito, Serena,Genovese, Salvatore,Stefanucci, Azzurra,Mathieu, Veronique,Kiss, Robert,Epifano, Francesco
, p. 91 - 97 (2014)
Three naturally occurring oxyprenylated diketopiperazines were synthesized and preliminarily tested as growth inhibitory agents in vitro against various cancer cell lines. The compounds were tested on six human cancer cell lines with different sensitivity to proapoptotic stimuli using the MTT colorimetric assay. The data revealed that of the chemicals under study only deoxymicelianamide (11) displayed the highest activity, recording mean IC50 growth inhibitory values ranging from 2 to 23 μM. A comparative study with the non-geranylated saturated derivative of (11) revealed the importance of the presence of the geranyloxy side chain and the exocyclic 2,5-DPK double bond moiety for the observed activity.
NEW Co-METABOLITES OF GLIOTOXIN IN GLIOCLADIUM VIRENS
Kirby, Gordon W.,Rao, Ghanakota V.,Robins, David J.
, p. 301 - 304 (2007/10/02)
Chromatographic separation of extracts of Gliocladium virens, grown on a medium containing sulphate, has led to the identification of 5 co-metabolites of gliotoxin (1a), new to this fungus, viz. the epitrisulphide, gliotoxin E (1b), the 3-hydroxymethylbut-2-enyl ether (3c), didehydrogliotoxin (5), bis-N-norgliovictin (6), and the 3-methylbut-2-enyl ether of cyclo-(glycyl-L-tyrosyl) (7); the metabolites (3c), (6), and (7) are new natural products.The synthesis of the epitri- and epitetrasulphides, gliotoxin E (1b) and gliotoxin G (1c), from gliotoxin (1a) is described, as is that of the 3-methylbut-2-enyl ether (7) from cyclo-(glycyl-L-tyrosyl).The biosynthetic significance of the dioxopiperazines (6) and (7) is briefly discussed.