| | 1 | Author
| J. B. Stothers, A. Stoessl, E.W B Ward | Requires cookie* | | | Title
|  | | | | Abstract
| The mechanism of the biological hydroxylation of the isopropenyl side-chain of the sesquiterpene capsidiol, to give 13-hydroxycapsidiol, has been investigated with 13C-N M R techniques, using capsidiol biogenetically enriched with 13C from [l^-^CU] acetate. The results indicate that neither an allylic rearrangement nor the formation of an epoxide intervene in the process. | | | |
Reference
| Z. Naturforsch. 33c, 149—150 (1978); eingegangen am 30. Dezember 1977 | | | |
Published
| 1978 | | | |
Keywords
| Biosynthesis, Capsidiol, 13C-NMR, Phytoalexins, Sesquiterpenes | | | |
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| | | | | TEI-XML for
| default:Reihe_C/33/ZNC-1978-33c-0149_n.pdf | | | | Identifier
| ZNC-1978-33c-0149_n | | | | Volume
| 33 | |
| 2 | Author
| H. Wesch, R. Jonak, H. Nemetschek-Gansler, H. Riedl, Th Nemetschek | Requires cookie* | | | Title
| Der Einfluß von D-Penicillamin auf den Gehalt einiger Organe an Spurenelementen sowie auf die mechanischen Eigenschaften von Kollagen Trace Elements in Several Organs and Mechanical Properties of Collagen under the Influence of D-Penicillamin | | | | Abstract
| The content of trace elements in several organs of rats under the influence of D-penicillamine (D-PA) was investigated by the neutronactivation-analysis. It could be shown an diminution of Cu, and Co under D-PA-treatment, the content of Fe, Mn, Rb and Zn was not influenced. The investigat ed organs didn't show any submicroscopic alterations under D-PA. On isolated collagen fibrils of tail tendon was seen a significantly diminuition of E-moduls. In accordance with Siegel the principal effect of D-PA is thought to block the synthesis of functional groups from Schiff-base crosslink precursors but not to inhibit lysyloxidase by loss of Cu-ions of connective tissue. The thermostability of D-PA influenced fibrils is changed in stretched state only and will be due to the lack of crosslink Schiff-bases; where as the shrinking point of not stretched fibrils shows only aging dependent changes. | | | |
Reference
| Z. Naturforsch. 33c, 346 (1978); eingegangen am 17. März 1978 | | | |
Published
| 1978 | | | |
Keywords
| D-Penicillamin, Trace Elements, Electron Microscopy, Biosynthesis, Cross-Links, Mechanical Properties of Collagen | | | |
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| default:Reihe_C/33/ZNC-1978-33c-0346.pdf | | | | Identifier
| ZNC-1978-33c-0346 | | | | Volume
| 33 | |
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