cas 477-90-7, Bengenin | Articles data

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Two-step enzymatic modification of solid-supported bergenin in aqueous and organic media
The natural flavonoid bergenin was directly immobilized onto carboxylic acid-functionalized controlled pore glass (carboxy-CPG) at 95% yield. Immobilized bergenin was brominated via chloroperoxidase in aqueous solution and then transesterified with vinyl butyrate in diisopropyl ether by subtilisin carslberg (SC) extracted into the organic solvent via ion-pairing. Enzymatic cleavage of 7-bromo-4-butyrylbergenin from carboxy-CPG (9.6% final yield) was accomplished using lipase B (LipB) in an aqueous/organic mixture (90/10 v/v of water/acetonitrile), demonstrating the feasibility of solid-phase biocatalysis of a natural product in aqueous and non-aqueous media.
Akbar, Umar,Shin, Dong-Sik,Schneider, Elizabeth,Dordick, Jonathan S.,Clark, Douglas S.
p. 1220 - 1225
(2010)
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New gallic acid glycosides from mallotus plicatus
From the stem bark of Mallotus plicatus (Muell.Arg.) Airy Shaw, two new gallic acid glycosides, namely bergenin-8-O-α-L-rhamnoside (1) and seco-bergenin-8-O-α-L-rhamnoside (2) were isolated along with seven known compounds (3-9). The structures of the new
Luangruangrong, Kongsin,Sritularak, Boonchoo,Lipipun, Vimolmas,Likhitwitayawuid, Kittisak
p. 1237 - 1244
(2014/05/20)

Tannins and related compounds. LXXXVIII.(1)) Isolation and characterization of hydrolyzable tannins from Mallotus japonicus (THUNB.) MUELLER-ARG. And M. Philippinensis (LAM.) MUELLER-ARG.
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Saijo,Nonaka,Nishioka,Chen,Hwang
p. 2940 - 2947
(2007/10/02)

BERGENIN DERIVAVTIVES FROM MALLOTUS JAPONICUS
Three new bergenin derivatives were isolated from the bark of Mallotus japonicus and determined to be 11-O-galloylbergenin, 4-O-galloylbergenin and 11-O-galloyldemethylbergenin.The 13C resonances of bergenin were fully assigned.Key Word Index - Mallotus japonicus; Euphorbiaceae; polyphenols; 11-O-galloylbergenin; 4-O-galloylbergenin; 11-O-galloyldemethylbergenin; geraniin; methylellagic acid; 13C NMR.
Yoshida, Takashi,Seno, Kaoru,Takama, Yukiko,Okuda, Takuo
p. 1180 - 1182
(2007/10/02)

Chemical Properties

Appearance/Colour :the loose white needle crystal powder or crystalline
Melting Point: 237-240 °C
Boiling Point: 658.9 °C at 760 mmHg
Flash Point:250.7 °C
Density: 1.639 g/cm³
Solubility:DMSO (Slightly), Methanol (Slightly)
Storage Temp.:?20°C
Vapor Pressure: 2.92E-18mmHg at 25°C
Refractive Index: 1.655
PKA: 8.26±0.70(Predicted)
PSA: 145.91000
LogP: -1.20060

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Chemical Properties

Appearance/Colour :the loose white needle crystal powder or crystalline

Melting Point: 237-240 °C

Boiling Point: 658.9 °C at 760 mmHg

Flash Point:250.7 °C

Density: 1.639 g/cm³

Solubility:DMSO (Slightly), Methanol (Slightly)

Storage Temp.:?20°C

Vapor Pressure: 2.92E-18mmHg at 25°C

Refractive Index: 1.655

PKA: 8.26±0.70(Predicted)

PSA: 145.91000

LogP: -1.20060

Global suppliers and manufacturers of 477-90-7total 160 suppliers on LookChem

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477-90-7

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Chemical Properties

Appearance/Colour :the loose white needle crystal powder or crystalline

Melting Point: 237-240 °C

Boiling Point: 658.9 °C at 760 mmHg

Flash Point:250.7 °C

Density: 1.639 g/cm3

Solubility:DMSO (Slightly), Methanol (Slightly)

Storage Temp.:?20°C

Vapor Pressure: 2.92E-18mmHg at 25°C

Refractive Index: 1.655

PKA: 8.26±0.70(Predicted)

PSA: 145.91000

LogP: -1.20060

Global suppliers and manufacturers of 477-90-7total 160 suppliers on LookChem

Density: 1.639 g/cm³