Terpenoids in four Inula species from Bulgaria
| Autor: | Trendafilova Antoaneta, Ivanova Victoria, Todorova Milka, Staleva Plamena, Aneva Ina |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of the Serbian Chemical Society, Vol 86, Iss 12, Pp 1229-1240 (2021) |
| Druh dokumentu: | article |
| ISSN: | 0352-5139 1820-7421 |
| DOI: | 10.2298/JSC210730087T |
| Popis: | Phytochemical study of the chloroform extract of the aerial parts of Inula germanica L., I. ensifolia L., I. conyza (Griess.) DC. and I. salicina L. led to the identification of 33 terpenoids. β- and α-amyrin, lupeol, taraxasterol, ψ-taraxasterol and their 3-O-acetates and 3-O-palmitates were identified by GC/MS. In addition, the structures of 3-O-palmitates of mainaladiol, arnidiol, faradiol and 16-hydroxylupeol were confirmed by NMR. ent-Kaur-16-en-19- -oic acid and its 15α-(3-methylpentanoyloxy) and 15α-(3-methylbutanoyloxy) derivatives were isolated from I. conyza. Ten closely related sesquiterpene lactones (germacranolides and melampolides) were found in I. germanica and their structural identification was performed by spectral analyses. I. ensifolia and I. salicina were free of sesquiterpene lactones and diterpenoids. All triterpenoids and diterpenoids, grazielia acid, desacetylovatifolin and 8-(2-methylbutanoyloxy)- 1(10),4,11(13)-germacrutrien-6,12-olide-14-oic acid are described for the first time in the studied species. The principal component analysis was used to find a relationship between thе investigated up to now Inula species, growing in Bulgaria. |
| Databáze: | Directory of Open Access Journals |
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