Abstract
Six new pyrrolizidine alkaloids, a new carboxylic acid, a new phenolic and a new oleanane
glycoside, together with the known compounds 7,7′-bis-(4-hydroxy-3,5-dimethoxyphenyl)-8,8′-dihydroxymethyltetrahydrofuran
4′-O-β-D-glucopyranoside, rosmarinic acid, caffeic acid, tormentic acid 28-O-β-D-glucopyranoside, euscaphic acid 28-O-β-D-glucopyranoside, euscaphic acid, and allantoin were isolated from Anchusa strigosa roots. Their structures were established by high resolution NMR, MS, elemental analysis,
and chemical reactions.
Key words
Anchusa strigosa
- Boraginaceae - pyrrolizidine alkaloids - phenolic glycoside - oleanane glycoside
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Dr. Alessandra Braca
Dipartimento di Chimica Bioorganica e Biofarmacia
Università di Pisa
Via Bonanno, 33
56126 Pisa
Italy
Fax: +39-050-43321
Email: braca@farm.unipi.it