Chemotaxonomie der Pflanzen

Hegnauer, Robert

doi:10.1007/978-3-0348-9389-3

Cited by 230 publications

(48 citation statements)

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“…Nonacosan-10-ol and the C 29 diols are constituents of higher plant waxes and are especially common in conifer waxes (Bianchi 1995). Major constituents of the extract are diterpenoids of the abietane, labdane, and totarane classes, which are known as common constituents of conifer resins (Hegnauer 1962(Hegnauer , 1986Otto and Wilde 2001).…”

Section: Discussionmentioning

confidence: 99%

Biomolecules preserved in ca. 168 million year old fossil conifer wood

Marynowski

Otto

Zatoń

et al. 2006

Naturwissenschaften

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Biomarkers are widely known to occur in the fossil record, but the unaltered biomolecules are rarely reported from sediments older than Paleogene. Polar terpenoids, the natural products most resistant to degradation processes, were reported mainly from the Tertiary conifers, and the oldest known are Cretaceous in age. In this paper, we report the occurrence of relatively high concentrations of ferruginol derivatives and other polar diterpenoids, as well as their diagenetic products, in a conifer wood Protopodocarpoxylon from the Middle Jurassic of Poland. Thus, the natural product terpenoids reported in this paper are definitely the oldest polar biomolecules detected in geological samples. The extracted phenolic abietanes like ferruginol and its derivatives (6,7-dehydroferruginol, sugiol, 11,14-dioxopisiferic acid) are produced only by distinct conifer families (Cupressaceae s. l., Podocarpaceae and Araucariaceae), to which Protopodocarpoxylon could belong based on anatomical characteristics. Therefore, the natural product terpenoids are of great advantage in systematics of fossil plant remains older than Paleogene and lacking suitable anatomical preservation.

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Section: Discussionmentioning

confidence: 99%

Biomolecules preserved in ca. 168 million year old fossil conifer wood

Marynowski

Otto

Zatoń

et al. 2006

Naturwissenschaften

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“…The 229 Garifuna medicinals (Table 1) were surveyed for alkaloids and glycosides. This was determined by doing a literature search, covering the period of 1950-1994, of major compendia, including manual and electronic sources on alkaloids (Karrer, 1958(Karrer, , 1977(Karrer, , 1981(Karrer, , 1985Willaman and Schubert, 1961;Hegnauer, 1962Hegnauer, , 1963Hegnauer, , 1964Hegnauer, , 1966Hegnauer, , 1969Hegnauer, , 1973Hegnauer, , 1986Hegnauer, , 1989Hegnauer, , 1990Hegnauer, , 1992Hegnauer, , 1994Willarnan and HuiLin Li, 1970); Chemical Abstracts Services (CAS); and Natural Products Alert (NAPRALERT).…”

Section: Methodsmentioning

confidence: 99%

Screening of medicinal plants used by the Garífuna of Eastern Nicaragua for bioactive compounds

Coe

Anderson

1996

Journal of Ethnopharmacology

138

120

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As part of a larger study of the plants used by the Garifuna of eastern Nicaragua, the 229 species representing 177 genera and 72 families used for medicinal purposes were assayed for the presence of bioactive compounds. A review of the literature for alkaloids and glycosides showed that 113 species contained at least one of these bioactive compounds. The remaining 116 species not previously cited were tested for alkaloids with Dragendorff's reagent; 51 contained alkaloids. The combined results show that 72% of the species the Garifuna use medicinally have at least one alkaloid or glycoside. Tests to explore pharmacological activity of compounds from selected species represent the next step to determining efficacy and application of these medicinals.

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“…Whereas the volatile oil of the berries of the common juniper has been investigated in considerable detail (4)(5)(6), the leaf oil has received scant attention, Hegnauer (5) listing only apinene, camphene, and cadinene as constituents. The components of the wood were investigated in detail by Bredenberg (7).…”

Section: Introductionmentioning

confidence: 99%