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Glycosides from Stevia rebaudiana
A new laboratory method for isolating the glycosides stevioside and rebaudiosides A and C from leaves of Stevia rebaudiana was proposed. According to HPLC, the glycoside contents in plants grown inExpand
Betulin and Its Derivatives. Chemistry and Biological Activity
The data on natural sources of betulin and methods of its extraction are systematized in the review. Transformations of betulin and its available derivatives are considered. The data on theExpand
Catalytic oxidation of olefins and alcohols with hydrogen peroxide in a two-phase system giving mono- and dicarboxylic acids
The present study considered the influence of various factors on the catalytic activity of systems based on a combination of tetrakis(oxodiperoxotungsto)phosphate(3−) with quaternary ammoniumExpand
Synthesis and antimicrobial activity of mono-and biquaternized derivatives of dipyridylethanes and dipyridylethylenes
A series of mono-and biquaternized derivatives of dipyridylethanes and dipyridylethylenes has been synthesized and characterized with respect to antimicrobial activity. The new compounds exhibitExpand
Biological activity and pharmacological prospects of lupane terpenoids: I. natural lupane derivatives
The biological activity of natural and semisynthetic lupane triterpenoids is discussed in a two-part review. The first part is devoted to the pharmacological properties of natural lupaneExpand
Synthesis of substituted 1,2,3,4-tetrahydroquinones by the Povarov reaction. New potentials of the classical reaction
Reactions of aromatic Schiff bases with alkenes affording substituted 1,2,3,4-tetrahydroquinolines are reviewed. The synthetic potential and the mechanisms of reactions and the effect of catalystsExpand
Biological activity and pharmacological prospects of lupane terpenoids: II. Semisynthetic lupane derivatives
TLDR
Acyl derivatives that mainly exhibit high anti-HIV, antitumor, and organoprotective activities are described. Expand
Chiral 1,3,2-oxazaborolidines in asymmetric synthesis: recent advances
The use of chiral 1,3,2-oxazaborolidines in asymmetric organic synthesis, particularly, in enantioselective reduction of ketones, imines and oxime ethers, asymmetric Diels–Alder reactions, aldolExpand
Glycals in enantiospecific synthesis
The reactions of 1,2-unsaturated sugars (glycals) are considered in this review in relation to problems of the enantiospecific synthesis of natural products, their fragments, and their analogues. TheExpand
Synthesis and anti-tuberculous activity of diesters based on isosteviol and dicarboxylic acids
Diesters based on isosteviol and dicarboxylic acids were synthesized and tested for antituberculous activity. Isosteviol and some of its derivatives exhibit appreciable tuberculostatic properties inExpand
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