Loline alkaloids

Tong DW et al, Seasonal change of loline alkaloids in endophyte-infected meadow fescue, Agric Sci China 5 793-797, 2006. [Pg.578]

Spiering MJ et al. Gene clusters for insecticidal loline alkaloids in the grass-endophytic fungus Neotyphodium uncinatum, Genetics 169 1403—1414, 2005. [Pg.579]

Blankenship JD, Spiering MJ, Wilkinson UH, Fannin FF, Bush LP, Schardl CL. Production of loline alkaloids by the grass endophyte, Neotyphodium uncinatum, in defined media. Phytochemistry 58 395-401, 2001. [Pg.311]

Wilkinson HH, Siegel MR, Blankenship JD, Mallory AC, Bush LP, Schardl CL. Contribution of fungal loline alkaloids to protection from aphids in a grass-endophyte mutualism. Mol Plant-Microbe Int 13 1027-1033, 2000. [Pg.316]

Riedell WE, Kieckhefer RE, Petroski RJ, Powell RG. Naturally occurring and synthetic loline alkaloid derivatives insect feeding behavior modification and toxicity. J Entomol Sci 26 122-129, 1991. [Pg.426]

Strickland et al. (1991, 1994) studied the effects of ergot and loline alkaloids of E+ fescue on prolactin release by isolated and perfused rat pituitary cells. The ergot alkaloids had prolactin-lowering effects and mimicked dopamine action. The use of a D2 dopamine receptor antagonist (domperidone) blocked the effect of the ergot alkaloids and prevented their prolactin-lowering effect. Domperidone... [Pg.488]

Petroski RJ, Dombos DL Jr, Powell RG. Germination and growth inhibition of annual ryegrass (Lolium multiflorum L.) and Alfalfa (Medicago sativa) by loline alkaloids and synthetic N-acylloline derivatives. J Agric Food Chem 38 1716-1718, 1990. [Pg.569]

Details of the synthesis of the ring system of the loline alkaloids [as in loline (33)] have now been provided ( f. Vol. 10, p. 50). The authors speculate on the close biogenetic... [Pg.70]

Petrosld, R.J. etaL 1989. Isolation, semisyn-thesis and nmr studies of loline alkaloids JournalofNaturalProducts810-817. [Pg.595]

This synthetic strategy has been extended by the same authors to the synthesis of the ring system of the loline alkaloids. Seven simple loline alkaloids [e.g. loline (9)] and one dimeric species have been identified (see these Reports, Vol. 8, Ch. 3). The ketone (10) was converted into the amine (11) in analogous fashion to the formation of (7) from cyclohept-4-enone (see Scheme 3). Treatment of the amine (11) with bromine led to transannular cyclization and formation of the 3-aza-9-oxabrendane system (13) in good yield (85%), as shown in Scheme 4. The... [Pg.50]

Roberts E, Lindow S. Loline alkaloid production by fungal endophytes of Eescue species select for particular epiphytic bacterial microflora. ISMF J 2014 8 (2) 359-68. [Pg.90]

Bylin AG, Hume DE, Card SD, Mace WJ, Lloyd-West CM, Huss-Danell K. Influence of nitrogen fertilization on growth and loline alkaloid production of meadow fescue (Festuca pratensis) associated with the fungal symbiont Neotyphodium unci-natum. Botany—Botanique 2014 92(5) 370-5. [Pg.283]

A/ illNoronono alkaloids Benzylisoquinoline alkaloids p-carbollno alkaloids Cyclopeptide alkaloids Dilerpene alkaloids DIscorhabdin alkaloids Ergot alkaloids Hasiibanano-lype alkaloids Imidazole alkaloids Indole alkaloids Indolo-diterpene alkaloids Indolocarbazole alkaloids Isoqninoline alkaloids Loline alkaloids... [Pg.321]

Analysis of fractions for loline alkaloids. Loline alkaloids present in the various fractions were determined by the quantitative capillary gas chromatographic method of Yates al. (7). Prior to GC analysis, 50-/iL or 100-/iL aliquots of each fraction to be analyzed were diluted to 0.98 mL with MeOH, and phenyl morpholine was added as an internal standard (200 /ig in 20 /iL MeOH) l-pL injections were used. [Pg.429]

Loline (31 mg) and N-acetylnorloline (28 mg) were found together at 733-812 mL of effluent. No absorbencies at 312 nm or loline alkaloids were found after 812 mL of effluent. [Pg.432]

In summary, N-methylloline, N-acetylloline, and N-formylloline were well separated from each other using gram-scale high-speed countercurrent chromatography, and recovery of loline alkaloids was quantitative. Ergot alkaloids were well separated from each other... [Pg.432]

Neotyphodium uncinatum Loline alkaloids Cell suspension... [Pg.227]

Tofern B, Kaloga M, Witte L, Hartmann T, Eich E (1999) Occurrence of loline alkaloids in... [Pg.258]

Tofern B, Kaloga M, Witte L, Hartmann T, Rich E (1999) Occurrence of loline alkaloids in Argyreia mollis (Convolvulaceae), Phytochemistry 51 1177-1180 Wu TS, Tsai YL, Damu AG, Kuo PC, Wu PL (2002) Constituents from the root and stem of Aristolochia elegans. J Nat Prod 65 1522-1525... [Pg.270]

Yates SG, Petroski RJ, PoweU RG (1990) Analysis of loline alkaloids in endophyte-infected taU fescue by capillary gas chromatography. J Agric Food Chem 38 182-185... [Pg.270]

Naturally Occurring Alkaloids of the Loline Group 4.2.1. Loline Alkaloids from Lolium Species... [Pg.322]

Literature concerning the chemistry of loline alkaloids was first reviewed in 1972 (20). Robbins et al. (21), using much milder isolation procedures than those of Yates and Tookey (18), also reported the occurrence of AT-acetylloline (6), AT-acetylnorloline (7), and N-formylloline (9) in F. arundinacea seed. Procedures for multiple-gram scale isolation of loline dihydrochloride from F. arundinacea seed, and its conversion in high yield to any of the monomeric... [Pg.322]

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