Pyrrolizidine alkaloids from Onosma arenaria (Boraginaceae)
Uplandicine, a 1,2-unsaturated pyrrolizidine alkaloid esterified with acetyl and echimidinyl moieties at C-7 and C-9, respectively, was isolated as a major component from the alkaloid extract of Onosma arenaria. Its structure was confirmed by MS (EI and positive FAB), 1H- and 13C-NMR analysis. Furth...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2003
|
| In: |
Biochemical systematics and ecology
Year: 2003, Volume: 31, Issue: 5, Pages: 477-485 |
| ISSN: | 1873-2925 |
| DOI: | 10.1016/S0305-1978(02)00177-1 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1016/S0305-1978(02)00177-1
|
| Author Notes: | Assem El-Shazly, Afaf Abdel-Ghani, Michael Wink |
| Summary: | Uplandicine, a 1,2-unsaturated pyrrolizidine alkaloid esterified with acetyl and echimidinyl moieties at C-7 and C-9, respectively, was isolated as a major component from the alkaloid extract of Onosma arenaria. Its structure was confirmed by MS (EI and positive FAB), 1H- and 13C-NMR analysis. Furthermore, nine minor alkaloids were identified on the basis of mass spectral data and/or Kovats retention indices. |
|---|---|
| Item Description: | Gesehen am 04.10.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1873-2925 |
| DOI: | 10.1016/S0305-1978(02)00177-1 |