Glycoside naming

Only three of the metabolically active cardiac glycosides, namely digoxin, digitoxin, and lanatoside C, are commonly used in therapy. Digoxin is the form most frequently prescribed in the United Kingdom and the United States. 

The product usually extracted from both types of Digitalis is made up of already partially hydrolyzed glycosides, namely digitoxin and digoxin. 

The leaves of Stevia rebaudiana (Compositae) are a source of several sweet glycosides of steviol (26) (Fig. 15) [1, 61]. The major glycoside, stevioside (27), is used in oriental countries as a food sweetener and the second major glycoside named rebaudioside (28), which is sweeter and more delicious than stevioside, is utilized in beverages. 

We attempted to by-pass the above reductive amination by preparing alternative glycosides, namely the allyl- and 2-trimethylsilylethyl- -D-xylopyrano-sides, 57 and 58, respectively. However, to date, we have not been able to convert either 57 or 58 into the enantiomer of 52 or its expected precursor 59 [41]. 

Dais and Perlin90 have invoked the molecular-weight dependence of the 7, values in conjunction with solvent effects in order to explain the dynamic behavior of a pair of anomeric glycosides, namely methyl a-D- (5a) and methyl j8-D-gluco-pyranoside (5b) in a group of solvents that represent an extended range of such properties as viscosity and dielectric constants. 

In the second report, Zard and collaborators examined the addition of the xanthate derivatives 40 to different olefin-branched glycosides as the initial step for the preparation of an important class of C-aryl glycosides, namely the gilvocarcins [45]. The addition steps are high yielding and the radical adducts can effectively be desulfurized, ring-closed, and subsequently aromatized (Scheme 28). 

There are two general methods for the synthesis of glycosiduronic acids. The first is that used for other glycosides, namely, by condensing the... 

Dispsacus asper is a perennial herb distributed across China. Its roots have been used in traditional medicine as an analgesic. Recently, a triterpene glycoside named dispsacus saponin C was isolated. When spinally administered, this compound produces antinociception which appears to be mediated by GABAergic, serotonergic and noradrenergic receptors in the spinal cord [70]. 

In the genus Baccharis there are only reports of simple phenolic derivatives in B. dracunculifolia, an indigenous species throughout the Southeast parts of Latin America, which yielded ten new phenolic glycosides named dracunculifosides A-J, Fig. (51) [75,76],... 

Quassinoid glycosides named bruceantinoside (72) and the new bruceanic acids B (73), C (74), and D (75) were isolated from wood Brucea antitfysenterica [39-40], Bruceanic acid D (75) was cytotoxic against P-388 (ED50 0.77 pg/mL). 

Three quassinoids named yadanziolides A (90), B (91), and C (92), and four quassinoids glycosides named yadanziosides F (93), I (94), J (95), and L (96) were isolated from water-soluble fraction methanol extract of seeds of Bruceci javanica Merr., and their structures were determined by spectral and chemical means [44]. 

Abstract A new triterpenoid glycosides, named decaisoside F, has been isolated from Decaisnea fargesii and its structure was elucidated on basis of spectral and chemical methods to be 3-0-y3-D-xylopyranosyl (l->3)-a-L-rhamnopyranosyl (l->2)-a-L-arabinopyranosyl hederagenin 28-0-jg-D-xylopyranosyl(l->4)- 3-D-glucopyanosyl (1—>6)-j3-D-glucopyranoside. 

Abstract—Five novel sesquiterpene glycosides named dictamnosides A-E (1-5) were isolated from the methanol extract of the root bark of Dictamnus dasycarpus (Rutaceae). Their structures were established on the basis of X-ray diffraction, spectroscopic and chemical methods. 

During our work on active metabolites from starfish we have isolated from Astropecten indicus three novel steroidal glycosides named as indicoside A (26). B (27) and C (28). The red alga Laurencia pinnatifida yielded three new halogenated sesquiterpenoids pinnatificine (29) pinnatifidone (30) and 1(1 4(3,10d tr ibromo-3-chloro-7(14)-ene-a-chamigrene (31). ... 

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