TY  - JOUR
A1  - Rauwald, Hans Wilhelm
A1  - Beil, Anette
T1  - 5-Hydroxyaloin A in the genus aloe thin layer chromatographic screening and high performance liquid chromatographic determination
T2  - Zeitschrift für Naturforschung, C
N2  - By a comparative thin layer chromatographic screening of the methanol-soluble leaf exudates from more than 400 Aloe plants (183 species), 5-hydroxyaloin A was identified in 20 species. Whilst 13 of the 20 species revealed interindividual variations concerning to the occurrence of 5-hydroxyaloin A, this anthrone-C-glucosyl was unambiguously detected in each individual of 6 Aloe species. In the leaf exudates from A. marlothii Berger 5-hydroxyaloin A was only traceable in the aloin-containing chemivars. The complete anthrone-C-glucosyl pattern of these 7 clearly characterized species has been determined additionally by qualitative and quantitative high performance liquid chromatography: The results obtained demonstrate that 5-hydroxyaloin only occurs in the more stable A-configuration (10 R, 1′S), thus being till now the only anthrone-C-glycosyl which has not been found as diastereomeric pair genuinely in plants. As well, 5-hydroxyaloin A characterizes a quantitatively significant hydroxylating pathway in biosynthesis of anthranoids. It is discussed as a chemotaxonomic marker of the genus Aloe, especially of the sections Pachydendron and Eualoe.
KW  - Aloe
KW  - Asphodelaceae
KW  - 5-Hydroxyaloin A
KW  - Quinones
KW  - Chemotaxonomy
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/79932
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-799329
SN  - 0939-5075
SN  - 1865-7125
VL  - 48.1993
IS  - 1-2
SP  - 1
EP  - 4
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -