Lignans and Other Constituents of Centaurea sphaerocephala ssp. polyacantha.
Extraction of the aerial parts of CENTAUREA SPHAEROCEPHALA L. ssp. POLYACANTHA (Willd.) Dostal furnished the lignans (-)-matairesinol, (-)-arctigenin, and (-)-arctiin, two sesquilignans lappaol A and a stereo- or structural isomer of lappaol A, and a new dithienylacetylene.
Bastos
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MM
Departamento de Química, Faculdade de Engenharia, Universidade do Porto, 4000-Porto, Portugal.
Kijjoa
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A
Cardoso
J M
JM
Gutiérrez
A B
AB
Herz
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W