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Seeds of Fatsia japonica (Araliaceae) yielded the new glycosides of gypsogenin: 3-O-β-D-glucopyranosyl-(1→2)-O-β-D-glucopyranoside and 3-O-β-D-galactopyranosyl-(1→2)-O-β-D-glucopyranoside. The structures of these compounds were established by chemical methods and NMR spectroscopy.
Diterpene indoles were prepared by the Fischer reaction from cyclopentenonepimaric acid. The structures of the synthesized compounds were confirmed by IR and NMR spectroscopies.
Seven ecdysteroids isolated from the aerial part of Silene linicola are identified using 1 H and 13 C NMR methods. Their yield from raw material was determined.
3β-Chloro-5α,7α-dibromo-6-ketosteroids 5a and 5b are synthesized from β-sitosterol (1a) and cholesterol (1b). Dehydrohalogenation of these forms 7α-bromo-2,4-dien-6-ones (6a-b), 2,4-dien-6-ones (7a-b), and 14α-hydroperoxy-2,4,7-trien-6-ones (8a-b). Woodward hydroxylation of dienone 6a...
Derivatives of 3-O-acetyl-18-βH-glycyrrhetic acid were synthesized. Their structures and membrane activities were studied.
The dimeric indole alkaloid arundamine is isolated from the total bases of Arundo donax L. (Poaceae) roots. The structure of arundamine is investigated using ordinary one-dimensional 1 H and 13 C NMR, J-modulated 13 C NMR, and various types of two-dimensional spectra, COSY, NOESY, HSQC, and HMBC.
Published data on the isolation and physicochemical and functional properties of hormone-binding plant proteins are reviewed. These investigations are directed mainly at the isolation of pure proteins, the proof of their receptor activity, and an explanation of their role in hormonal regulation...
The new dimeric indole alkaloid arundacine is isolated from the polar fraction of the total alkaloids from Arundo donax L. roots. The structure 3-N,N-dimethylaminoethyl-5-hydroxy-4-(3′-N′-acetyl-N′-methylaminoethylindol-1′-yl)indole is established using spectral data (IR, UV, mass,...
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