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Structural transformation of arctiin and tracheloside, major components of seeds of Arctium lappa and Carthamus tinctorius, were investigated using rat gastric juice (pH 1.2-1.5) and rat large… (More)
Serum concentrations of arctiin, tracheloside, and their metabolites formed in the gastrointestinal tract were investigated in the rat. Arctiin or tracheloside was not detected in the serum after… (More)
Two new isoprenylated flavones, cudraflavones A and B were isolated from the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Japanese name "Hariguwa", Moraceae). The structures of cudraflavones A… (More)
Lycoclavanin, a Lycopodium triterpenoid containing four hydroxy-groups and a conjugated ketone, was established as 16-oxoserrat-14-ene-3α, 20β, 21β, 24-tetraol (7a) by spectral and chemical means.… (More)
Four new isoprenylated xanthones, cudraxanthones A, B and C were isolated from the N-hexane extract of the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Japanese name "Hariguwa"; Moraceae), and… (More)
The structure and stereochemistry of lycoclavanin, a triterpenoid of L. clavatum, were established as (Ia).