Further Derivatives of Caffeic Acid from Echinacea purpurea.
In addition to 2,3-dicaffeoyltartaric acid 2-caffeoyl-3-feruoyltartaric acid, three further caffeic acid derivatives were isolated for the first time from the epigeous parts of E. PURPUREA. Their structures were established on the basis of total hydrolysis and spectroscopic methods.
Soicke
H
H
Dr. Madaus GmbH & Co., Chemie Forschung, Ostmerheimer Str.198, D-5000 Köln 91, Bundesrepublik Deutschland.
Al-Hassan
G
G
Görler
K
K