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7756016 
Journal Article 
The constituents of Echinacea atrorubens roots and aerial parts 
Dietz, B; Bauer, R 
2001 
1 
Pharmaceutical Biology
ISSN: 1388-0209 
TAYLOR & FRANCIS LTD 
ABINGDON 
39 
1 
11-15 
English 
WOS:000167621200003 
Eleven isobutylamides have been isolated from the n-hexane extract of the dried roots of Echinacea atrorubens Nutt. Undeca-2E,4E-dien-8,10-diynoic acid isobutylamide represents a new compound. The lipophilic profiles of constituents of the roots and the herb were similar as the alkamide profiles previously found in E. purpurea and E. angustifolia. The polar components of E. atrorubens roots and the aerial parts, however, seem to be very different from E. purpurea and E. angustifolia, since neither cichoric acid nor echinacoside could be found. 
Echinacea atrorubens Nutt.; Asteraceae; caffeic; acid derivatives; HPLC analysis; isobutylamides; isolation