2309-45-7

Upstream product

• 186581-53-3 diazomethane 
• 510-30-5 echinocystic acid 
• 510-30-5 echinocystic acid 
• 15436-73-4 Echinocystsaeure methylesterdiacetat 
• 78285-88-8 echinocystic acid 3-O-β-D-xylopyranosyl-(1->2)-α-L-arabinopyranosyl-(1->6)-β-D-glucopyranoside 
• 77-78-1 dimethyl sulfate 
• 124901-23-1 codonoside B 
• 124901-25-3 (2S,3S,4S,5R,6R)-6-((3S,6aR,6bS,8R,8aR,14bR)-8a-Carboxy-8-hydroxy-4,4,6a,6b,11,11,14b-heptamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydro-picen-3-yloxy)-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid 

Downstream Products

• 22478-83-7 3,16-dioxo-olean-12-en-28-oic acid methyl ester 
• 465-95-2 primulagenin A 
• 39701-82-1 methyl 3-acetyl 15:16-dehydroechinocystate 

Relevant academic research and scientific papers

An echinocystic acid saponin derivative from Kalimeris shimadae

A new triterpene saponin, shimadoside A, has been isolated from Kalimeris shimadae and its structure deduced as 3-O-β-D- glucopyranosiduronic acid-3β-16α-dihydroxyolean-12-en-28-oic acid 28-O-β- D-xylopyranosyl-(1 → 3)-β-D-xylopyranosyl (1 → 4)-α-L-rhamnopyranosyl-(1 → 2)-β-D-xylopyranoside by means of spectral data, especially NMR, including COSY, HMQC, HOHAHA and ROESY techniques, and chemical degradation.

STRUCTURE OF CODONOSIDE B

On the basis of chemical transformations and physicochemical characteristics of the compounds obtained it has been established that codonoside B - the main triterpene glycoside of Codonopsis lanceolata (Sieb. et Zucc.) Benth. et Hook., has the structure of echinocystic acid 3-O-β-D-glucopyranuronoside 28-O- 4)-O-α-L-rhamnopyranosyl-(1 -> 4)-O-β-D-glucopyranosyl-(1 -> 2)-α-L-arabinopyranoside>.

Study of Saponins from Albizzis lebbek Benth Flowers

Albizzia lebbek Benth flowers yield a number of saponins named as lebbekanin-D, F, G, and H.They are all glycosides of echinocystic acid with varying sugars.On the basis of enzymatic, partial alkaline hydrolysis, methylation and periodate oxidation studies, partial structures have been assigned to these saponins.

THE STRUCTURE OF PROSAPOGENIN OBTAINED FROM THE SAPONIN OF GLEDITSIA JAPONICA

Key Word Index - Gleditsia japonica; Leguminosae; saponins; bisdesmoside; echinocystic acid derivatives; Gleditsia saponin C. Prosapogenin was obtained by alkaline hydrolysis of Gleditsia saponin GS-C (echinocystic acid 3,28-O-bisdesmoside), a new triterpenoid saponin isolated from Gleditsia japonica.Prosapogenin was shown on the basis of chemical and physicochemical data to be echinocystic acid 3-O-β-D-xylopyranosyl-(1-2)-α-L-arabinopyranosyl-(1-6)-β-D-glucopyranoside.

STRUCTURES OF 3,28-O-BISGLYCOSIDIC TRITERPENOID SAPONINS OF FATSIA JAPONICA

Four novel 3,28-O-bisglycosidic triterpenoid saponins were isolated from the mature fruits of F. japonica.They were characterized as the 28-O-α-L-rhamnopyranosyl-(1->4)-β-D-glucopyranosyl-(1->4)-β-D-glucopyranosides of 3-O-α-L-arabinopyranosyl echinocystic acid, 3-O-α-L-arabinopyranosyl hederagenin, 3-O-β-D-glucopyranosyl-(1->2)-α-L-arabinopyranosyl oleanolic acid and 3-O-β-D-glucopyranosyl-(1->2)-α-L-arabinopyranosyl hederagenin respectively. - Keywords: Fatsia japonica; Araliaceae; mature fruits; 3,28-O-bisglycidic triterpenoid saponins.

Constitution of scheffleroside: a spermicidal saponin from Schefflera capitata.

While screening Indian plants for biological activities, it was observed that a 2% aqueous solution of the crude 70% aqueous ethanolic extract of Schefflera capitata showed significant activity against both rat and human spermatozoa. The new saponin, melting point 230-232 degrees, gives on acid hydrolysis D(+)-fucose (1 mole), D(+)-galactose (1 mole), D(+)-glucoronic acid (1 mole) and echinocystic acid (1 mole). Its structure has been tentatively assigned to scheffleroside.