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More than 20 compounds have been isolated from the bark of Quercus robur . Monomers: (−)-epicatechin, (−)-epicatechin gallate, (+)-catechin, (+)-catechin gallate, (+)-gallocatechin, (−)-epigallocatechin, and (−)-epigallocatechin gallate; dimeric proanthocyanidins:...
The liposoluble pigments — carotenoids, chlorophylls, and hypericin — have been determined in a chloroform extract of the herb common St. John's wort. It has been found that, among the carotenoids, the biologically active β-carotene and its oxygen-containing derivatives predominate.
Six steroid glycosides, which gave been called lilioglycosides B, C, E, F, H, and I have been isolated from fresh bulbs of Lilium regale Wills. The structure of each compound has been determined by methods of physicochemical analysis. This is the first time that lilioglycosides B, C, H, and I,...
The qualitative and quantitative compositions of the phospholipids from the seeds of Fumaria vaillantii L. have been determined. The total fatty acid compositions of all the classes of phospholipids and the position-distributions of the phosphatidylcholines, phosphatidylinositols, and...
We have investigated the IR spectra in the region of stretching vibration of N + −H and OH groups of the hydrochlorides of 2,3-trimethylene-3,4-dihydroquinazoline (deoxypeganine, DOP), 2,3-tetramethylene-3,4-dihydroquinazoline (tetrazoline), and 2,3-pentamethylene-3,4-dihydroquinazoline...
The method of obtaining radioactively labeled 14 C-gossypol-acetic acid has been improved: from it have been synthesized 14 C-derivatives of gossypol and their complexes with N-polyvinylpyrrolidone. A comparative study has been made of the pharmacokinetics of batriden, megosin, and their...
The thermodynamic mixing parameters in the composition nitrolignin-hydrolyzed nitron have been determined and it has been shown that the system is thermodynamically stable over the whole range of compositions.
The levels of lipids, pigments, and essential oil and the lipid and fatty acid compositions of individual organs of freshly gathered Mentha spicata plants have been established. It has been found that the organs studied have a complex qualitative composition of the extractive substances but...
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