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' -di-hydroxymethyltetrahydrofuran 4'-O-beta-D-glucopyranoside, ros-marinic acid, caffeic acid, tormentic acid 28-O-beta-D-glucopyrano-side, euscaphic acid 28-O-beta-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.
New pyrrolizidine alkaloids and glycosides from Anchusa strigosa
BRACA, ALESSANDRA;MORELLI, IVANO;
2003-01-01
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' -di-hydroxymethyltetrahydrofuran 4'-O-beta-D-glucopyranoside, ros-marinic acid, caffeic acid, tormentic acid 28-O-beta-D-glucopyrano-side, euscaphic acid 28-O-beta-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.File in questo prodotto:
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