Pyrrolizidine alkaloids from Heliotropium indicum
Helindicine (1), a new pyrrolizidine alkaloid with unusual structural features, together with the known lycopsamine (2), were isolated from the roots of Heliotropium indicum (Boraginaceae). The structures were established by a combination of 1D and 2D NMR methods (COSY, HMQC, HMBC, and NOESY) and HREIMS. This is the first report of a lactone pyrrolizidine alkaloid in the genus Heliotropium. Compounds 1 and 2 were assayed for antioxidant activity and showed moderate activity.
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2005
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000800019 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|