Ergopeptine alkaloids

Ball OJP, Miles CO, Prestidge RA. Ergopeptine alkaloids and Neotyphodium lolii-mediated resistance in perennial ryegrass against adult Heteronychus arator (Coleoptera, Scarabaeidae). J Econ Entomol 90 1382-1391, 1997. 

Hill NS, Thompson FN, Dawe DL, Stuedemann JA. Antibody binding of circulating ergopeptine alkaloids in cattle grazing tall fescue. Am J Vet Res 55 419-424, 1994. 

Hill NS, Parrott WA, Pope DD. Ergopeptine alkaloid production by endophytes in a common tall fescue genotype. Crop Sci 31 1545-1547, 1991. 

Rowan DD, Shaw GJ. Detection of ergopeptine alkaloids in endophyte-infected perennial ryegrass by tandem mass spectrometry. NZ Vet J 35 197-198, 1987. 

Incorporation of norvaline [70] in position of amino acid I led to the isolation of three unnatural ergopeptine alkaloids - ergorine, ergonorine, and ergo-nornorine... 

Pathway shunts and the apparently well regulated, but inefficient, flux through intermediates to end products may be selectively favorable because of the various biological activities of the different clavine, lysergyl, and ergopeptine alkaloids. Evidence pertinent to this hypothesis is reviewed by Panaccione 20). 

Yates, S. G. and R. G. Powell, Analysis of ergopeptine alkaloids in endophyte-infected tall fescue, J. Agric. Food Chem., 36, 337-340 (1988). 

Capillary zone electrophoresis with UV detection has been used to separate ergometrine, ergotamine, and their epimers [30]. The addition of cyclodextrins in phosphate buffer at pH 2.5 was required to resolve five ergopeptine alkaloids and their epimers. Supercritical fluid chromatography has also been used with UV detection at 280 nm or mass spectrometry to identify clavine alkaloids in extracts of Claviceps purpurea. 

Yates, S.G., Plattner, R.D. and Garner, G.B. (1985) Detection of ergopeptine alkaloids in endophyte infected, toxic Ky-31 tall fescue by mass spectrometry/mass spectrometry. /. Agric. Food Chem., 33, 719-722. 

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