(3R,6R,12R,20S,24S)-20,24-Epoxydammarane-3,6,12,25-tetraol dihydrate
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چکیده
The title compound, C(30)H(52)O(5)·2H(2)O, was degraded from pseudoginsenoside F11 which was extracted and seperated from Panax quinquefolium saponin. The three six-membered rings are in chair conformations. The five-membered ring is in an envelope conformation and the tetra-hydro-furan ring has a conformation inter-mediate between half-chair and envelope. In the crystal, inter-molecular O-H⋯O hydrogen bonds link mol-ecules into a three-dimensional network. Intra-molecular O-H⋯O hydrogen bonds also occur.
منابع مشابه
(3R,6R,12R,20S,24S)-3,6,12-Triacetyl-20,24-epoxydammarane-3,6,12,25-tetraol
The title compound, C(36)H(58)O(8), was prepared from 20(S)-protopanaxatriol, which was degraded from Panax quinquefolium saponin with sodium in glycerine, extracted and seperated by flash chromatography. Three six-membered rings are in chair conformations, the five-membered ring is in an envelope form and the tetra-hydro-furan ring has a conformation inter-mediate between half-chair and envelo...
متن کامل(3R,6R,12R,20S,24R)-20,24-Epoxydammarane-3,6,12,25-tetraol
In the title compound, C(30)H(52)O(5), the three six-membered rings are in chair conformations, the five-membered ring is in an envelope form and the tetra-hydro-furan ring has a conformation inter-mediate between half-chair and sofa. Intra-molecular O-H⋯O hydrogen bonds may influence the conformation of the mol-ecule. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bond...
متن کامل(3S,12R,20S,24R)-20,24-Epoxydammarane-3,12,25-triol
In the title mol-ecule, C(30)H(52)O(4), the three six-membered rings are in chair conformations, the cyclo-pentane ring is in an envelope form and the tetra-hydro-furan ring has a conformation inter-mediate between half-chair and sofa. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds into helical chains along [100]. Two intra-molecular O-H⋯O hydrogen bonds are also ...
متن کامل(20S*,24S*)-25-Hydroxy-20,24-epoxy-A-homo-4-oxadammaran-3-one (Chrysura) isolated from the leaves of Walsura chrysogyne
The title dammarane triterpenoid, C(30)H(50)O(4), assigned the name chrysura, was isolated from an ethyl acetate extract of Walsura chrysogyne leaves (Meliaceae). It has 20S*,24S* relative stereochemistry and an oxepanone ring with two methyl groups at position 4. The two cyclo-hexane rings adopt chair conformations. The cyclo-pentane and tetra-hydro-furan rings have envelope conformations; the...
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[ Product Information ] Name: Ginsenoside Rh1 Catalog No.: CFN99970 Cas No.: 63223-86-9 Purity: > 98% M.F: C35H60O9 M.W: 624.85 Physical Description: White powder Synonyms:(2R,3R,4S,5S,6R)-2-[[(3S,5R,6S,8R,10R,12R,14R,17S)-3,12-dihydroxy-17-[( 2S)-2-hydroxy-6-methylhept-5-en-2-yl]-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,12,13,15,1 6,17-dodecahydro-1H-cyclopenta[a]phenanthren-6-yl]oxy]-6-(hydroxy...
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