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The position of glucose linkage in phillyrin.
The position of glucose linkage in phillyrin (1) was established to be at C-4"by the discussion of 13C nuclear magnetic resonance (13C-NMR) spectra of phillygenin methyl ether (2), phillygenin (3)Expand
[Studies on the Chinese crude drug "Forsythiae fructus." I. On the constituents of Forsythiae fructus on the market].
Palladium-catalyzed arylation of furan, thiophene, benzo[b]furan and benzo[b]thiophene
Treatment of π-electron sufficient aromatic heterocycles such as title compounds with aryl bromides in the presence of tetrakis(triphenylphosphine)palladium gave the corresponding 2-aryl aromaticExpand
Introduction of an alcoholic hydroxyl group into 2,3-dibenzylbutyrolactone lignans with oxidizing agents and carbon-13 nuclear magnetic resonance spectra of the oxidation products.
Attempts were made to introduce an alcoholic hydroxyl group stereospecifically at the C-5 or C-6 position of 2, 3-dibenzylbutyrolactone lignans with lead tetraacetate and osmic acid as oxidizingExpand
Elucidation of the Structure of a New Lignan Glucoside from Olea europaea by Carbon-13 Nuclear Magnetic Resonance Spectroscopy
The structure of a new lignan glucoside isolated from the stem of Olea europaea LINN. (Oleaceae) was elucidated as (+)-1-acetoxypinoresinol-4´-β-D-glucoside [(1S, 2R, 5R,Expand
Chemoselective debezylation of the N-1-phenylethyl group in 2-oxazolidinones by the anisole-methanesulfonic acid system
The chemoselective removal of N-1-phenylethyl group in 2-oxazolidinones by the anisole-methanesulfonic acid system was investigated. Optically active 4,5-cis- and 4,5-trans-diphenyl-2-oxazolidinonesExpand