Terpene glucosides

Terpene glucosides chloroform — methanol (80 + 20). Arbutin ethyl acetate — methanol — water (100 + 17 + 14). 

Most essential oils appear to be evolved directly in the form of terpenic or non-terpenic compounds separable from the plant tissues in the same form as they exist therein. A considerable number, however, are evolved in the form of complex compounds known as glucosides, in which the essential oil complex is present, but wherein the essential oil itself does not exist in the free state. 

In the case-of most plants where the essential oil is due to a glucosidal decomposition, the products are of a non-terpenic character, but this is not invariably the case. 

Secoiridoids are complex phenols produced from the secondary metabolism of terpenes as precursors of several indole alkaloids (Soler-Rivas and others 2000). They are characterized by the presence of elenolic acid, in its glucosidic or aglyconic form, in their molecular structure. Oleuropein, the best-known secoiridoid, is a heterosidic ester of elenolic acid and 3,4- dihydroxyphenylethanol containing a molecule of glucose, the hydrolysis of which yields elenolic acid and hydroxytyrosol (Soler-Rivas and others 2000). 

To the first subgroup belong pauridianthoside (26), to which pauridianthine (7) and pauridianthinol (9) are obviously related, and isopauridianthoside (27). Acetylation of the sugar moiety is necessary to achieve separation of the two epimers, of which the UV, IR, and mass spectra are identical (36,37). Their H-NMR spectra, however, are substantially different, the glucosidic protons as well as the terpenic ones showing very specific chemical shifts and coupling constants, depending on the stereochemistry of the chiral centers (Table III). 

Fig. 4.6 Mechanisms of formation of a terpenes from geraniol and geranyl glucoside b p-damascenone from megastigm-5en-7yne-3,9-diol and its glucoside...

U.S. 5,025,069 (1991) Deguchi et al. (Kao) Alkyl glucoside-based compositions terpene and isothiazolone derivatives Reduced irritation and damage to hair and skin color and odor stability... 

Fig. 2A Ononidis radix (1). The characteristic isoflavone for nononetin-7-0-glucoside (ononin/ Tl) and its -6"-malonate are found as quenching zones in the R, range 0.65-0.75 in system 1. The terpene.s move with the solvent front.

The reports indicate the presence of terpenes, a-pinene, camphene, citral and beta-caryophyllene in the essential oil from the leaves and flavonoids such as casticin, orientin, isoorientin, luteolin, luteolin-7-O-glucoside, corymbosin, gardenins A and B, 3-O-desmethylartemetin, 5-0-desmethylnobiletin, 3, 4, 5,5, 6,7,8-heptamethoxyflavone, 3, 5-dihydroxy-4, 7,8-trimethoxyflavanone and 3, 5-dihydroxy-4, 6,7-trimethoxy... 

Kodama, H., T. Fujimori, and K. Kato Isolation of a new terpene glucoside, 3-hydroxy-5,6-epoxy-P-ionyl-P-D-glucopyranoside from flue-cured tobacco Agr. Biol. Chem.45 (1981)941-944. 

The metabolism of the terpene alcohols into 3-D-glucoside has been well documented. The peppermint cells, especially, are known to possess a high glucosyl transferase activity [9]. This work clearly demonstrates the accumulation of the glucosides in the cell rejecting the implied extracellular accumulation [12]. 

Weed that grows in open fields, on prairies, in garbage dumps, etc. and spread all over the world. Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc. are obtained from Taraxacum officinale. Allergenic substance is taraxin acid glucoside Synonyms Piss-a-bed Pissenlit taraxinic acid i-O-p-glucopyranoside Uses it is a popular folk medicine plant (laxative, diuretic, tonic, etc.)... 

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