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Flavonoids of Bidens tripartita. III
SummaryIt has been established that substance 4, isolated previously fromBidens tripartita, is (R-2)isookanin 7-O-β-D-glucopyranoside [(R-2)flavanomarein]. The compound isolated is a new one for theExpand
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Flavonoids ofBidens cernua
  • 4
Xanthones of Alnus glutinosa
Some species of alder are widely used in scientific and folk medicine [i], but their chemical composition has been studied inadequately. It is known that the leaves and inflorescences (catkins) ofExpand
  • 1
Flavonoids of Bidens tripartita. I
  • 4
Flavonoids of Bidens cernua
  • 4
Flavonoids of Asperula oppositifolia
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Coumarins of Bidens tripartita
The comminuted raw m a t e r i a l was t r ea t ed with 50% ethanol, the ex t rac t s were dr ied in vacuum to an aqueous res idue , and the l a t t e r was purif ied with ch loroform. When theExpand
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Flavonoids of Bidens tripartita II
SummaryThe herbBidens tripartita L. has yielded a chalcone identified as butein, an aurone identified as sulphuretin, and a new flavonoid butin 7-O-β-D-glucopyranoside.
Automatic filter ozonometer
A new fully automatic device for measurements of total ozone content is described. Expand