A cyanogenic glycoside from Canthium schimperianum

Schwarz, Birgit; Wray, Victor; Proksch, Peter

doi:10.1016/0031-9422(96)00018-0

Cited by 32 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Deviations from the base line are due to the steep gradient starting after 30 min. (Nahrstedt et al, 1995;Schwarz et al, 1996). Again in 2 the sequence was evident from the MS-MS analysis and the linkage of the b-glucopyranosyl moiety to the cyclohexenone moiety was evident from the correlation between the anomeric proton and H-9 in the 2D ROESY spectrum.…”

Section: Resultsmentioning

confidence: 95%

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

et al. 2005

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 95%

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

et al. 2005

Self Cite

View full text Add to dashboard Cite

“…A number of studies have shown cyanogenic glycosides to be detrimental to both insect (e.g. Schwarz, Wray & Proksch 1996) and mammalian herbivores (Poulton 1983). While there is some convincing evidence to suggest that they affect feeding behaviour (Fowler 1983), some authors remain ambivalent (e.g.…”

Section: Is Allocation To Prunasin Consistent With Defence Theories?mentioning

confidence: 99%

Enhanced CO2 alters the relationship between photosynthesis and defence in cyanogenic Eucalyptus cladocalyx F. Muell.

1998

View full text Add to dashboard Cite

The effect of elevated CO 2 and different levels of nitrogen on the partitioning of nitrogen between photosynthesis and a constitutive nitrogen-based secondary metabolite (the cyanogenic glycoside prunasin) was examined in Eucalyptus cladocalyx. Our hypothesis was that the expected increase in photosynthetic nitrogen-use efficiency of plants grown at elevated CO 2 concentrations would lead to an effective reallocation of available nitrogen from photosynthesis to prunasin. Seedlings were grown at two concentrations of CO 2 and nitrogen, and the proportion of leaf nitrogen allocated to photosynthesis, ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), protein and prunasin compared. Up to 20% of leaf nitrogen was allocated to the cyanogenic glycoside, although this proportion varied with leaf age, position and growth conditions. Leaf prunasin concentration was strongly affected by nitrogen supply, but did not increase, on a dry weight basis, in the leaves from the elevated CO 2 treatments. However, the proportion of nitrogen allocated to prunasin increased significantly, in spite of a decreasing pool of leaf nitrogen, in the plants grown at elevated concentrations of CO 2 . There was less protein in leaves of plants grown at elevated CO 2 in both nitrogen treatments, while the concentration of active sites of Rubisco only decreased in plants from the low-nitrogen treatment. These changes in leaf chemistry may have significant implications in terms of the palatability of foliage and defence against herbivores.

show abstract

“…Together with 2, the dicaffeoylquinic acids 3',5'-Odicaffeoylquinic acid (3) and 4',5'-O-dicaffeoylquinic acid (4) have been isolated from many sources (Timmermann et al, 1983;Clifford, 1986;Wald et al, 1989;Baumer and Ruppel, 1996;Chuda et al, 1996;Schwarz et al, 1996;Fuchino et al, 1997;Azuma et al, 1999;Miketova et al, 1999). These compounds have been claimed to possess many pharmacological properties such as anti-oxidant (Chuda et al, 1996;Azuma et al, 1999), hepatoprotectant (Baset et al, 1996), antibacterial (Scholz et al, 1994), anti-histaminic (Kimura et al, 1985), anti-spasmodic (Trute et al, 1997) and, most importantly, anti-HIV (Robinson et al, 1996a,b;Mahmood et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Identification of isomeric dicaffeoylquinic acids from Eleutherococcus senticosus using HPLC‐ESI/TOF/MS and ¹H‐NMR methods

Tolonen

Joutsamo

Mattlla

et al. 2002

Phytochemical Analysis

View full text Add to dashboard Cite

Liquid chromatography-electrospray time-of-flight mass spectrometry (HPLC-ESI/TOF/MS) and a novel NMR technique, developed to maximise the sensitivity obtained from the standard NMR spectrometer, have been applied to the identification of the phenolic constituents of Eleutherococcus senticosus. In addition, molecular modelling and dihedral bond angle calculations based on the vicinal 3JHH-coupling constants have been used in the unambiguous assignment of signals in the 1H-NMR spectra. 5'-O-Caffeoylquinic acid and three isomeric compounds, 1',5'-O-dicaffeoylquinic acid, 3',5'-O-dicaffeoylquinic acid and 4',5'-O-dicaffeoylquinic acid, have been isolated and identified from a sample. The isolation and structure determination of the latter two compounds are reported for the first time from this plant.

show abstract

A cyanogenic glycoside from Canthium schimperianum

Cited by 32 publications

References 7 publications

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

Enhanced CO2 alters the relationship between photosynthesis and defence in cyanogenic Eucalyptus cladocalyx F. Muell.

Identification of isomeric dicaffeoylquinic acids from Eleutherococcus senticosus using HPLC‐ESI/TOF/MS and ¹H‐NMR methods

Contact Info

Product

Resources

About

A cyanogenic glycoside from Canthium schimperianum

Cited by 32 publications

References 7 publications

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

Enhanced CO2 alters the relationship between photosynthesis and defence in cyanogenic Eucalyptus cladocalyx F. Muell.

Identification of isomeric dicaffeoylquinic acids from Eleutherococcus senticosus using HPLC‐ESI/TOF/MS and 1H‐NMR methods

Contact Info

Product

Resources

About

Identification of isomeric dicaffeoylquinic acids from Eleutherococcus senticosus using HPLC‐ESI/TOF/MS and ¹H‐NMR methods