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Natural Products
Inula Britannica L.

Inula britannica, the British yellowhead or meadow fleabane, is a plant species in the genus Inula. The plant produces the flavonol axillarin.
Herbs, perennial, 10-40(-75) cm tall. Stems erect, villous. Leaves sessile; basal blades lanceolate, (3-)6-7 cm × 8-20(-30) mm; cauline blades lanceolate-elliptic to lanceolate-linear, 2-5+ cm × 5-12(-20) mm, abaxially usually densely villous and glandular, adaxially sparsely strigillose to glabrate, bases cordate or auriculate, clasping, margins entire or serrulate. Capitula 1-8, 2.5-5 cm in diam.; peduncles 1-4 cm, densely villous.
Cytotoxicity-guided fractionation of the flowers of Inula britannica led to the isolation of four sesquiterpene lactones, 4 alpha, 6 alpha-dihydroxyeudesman-8 beta, 12-olide (1), ergolide (2), 8-epi-helenalin (3), and bigelovin (4). Compound 1 was isolated as a new natural product. These compounds showed cytotoxicity against human tumor cell lines.

Inula Britannica L.
Research products of Inula Britannica L.
Catalog Product Name CAS Number Manual
CFN902191-O-Acetyl britannilactone681457-46-5  n/a
CFN99272Quercetin117-39-5  PDF
CFN99825Carabrone1748-81-8  PDF
CFN97104Taraxasterol acetate6426-43-3  PDF
CFN98748alpha-Spinasterol481-18-5  PDF
CFN98692alpha-Spinasterol acetate4651-46-1  n/a
CFN99824alpha-Spinasterol glucoside1745-36-4  PDF
CFN991156,7-Dihydroxycoumarin305-01-1  PDF
CFN99952Daphnetin486-35-1  PDF
CFN97494Scopoletin92-61-5  PDF
CFN98857Wedelolactone524-12-9  PDF
CFN98850Quercitrin522-12-3  PDF
CFN98753Isoquercitrin482-35-9  PDF
CFN99116Chlorogenic acid327-97-9  PDF
CFN99074Taraxasterol1059-14-9  PDF
CFN894381-O-Acetylbritannilactone33627-41-7  n/a
CFN894701-O-Acetyl-6alpha-O-(2-methylbutyryl)britannilactone1932687-71-2  n/a
CFN895181,6-O,O-Diacetylbritannilactone1286694-67-4  n/a
CFN895211-O-Acetyl-6-O-isobutyrylbritannilactone1613152-34-3  n/a
CFN890016alpha-Hydroxytomentosin1232676-22-0  n/a
CFN89501Dibritannilactone B1829580-18-8  n/a
CFN89045Eupatolide6750-25-0  n/a
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