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Ginsenoside Rb2 - Revision history
2024-03-28T23:19:40Z
Revision history for this page on the wiki
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Toyama: New page: {{Hierarchy|{{PAGENAME}}}} {{Metabolite |SysName=(3beta,12beta)-20-[(6-O-alpha-L-Arabinopyranosyl-beta-D-glucopyranosyl)oxy]-12-hydroxydammar-24-en-3-yl 2-O-beta-D-glucopyranosyl-beta-D-g...
2010-02-16T01:02:42Z
<p>New page: {{Hierarchy|{{PAGENAME}}}} {{Metabolite |SysName=(3beta,12beta)-20-[(6-O-alpha-L-Arabinopyranosyl-beta-D-glucopyranosyl)oxy]-12-hydroxydammar-24-en-3-yl 2-O-beta-D-glucopyranosyl-beta-D-g...</p>
<p><b>New page</b></p><div>{{Hierarchy|{{PAGENAME}}}}<br />
<br />
{{Metabolite<br />
|SysName=(3beta,12beta)-20-[(6-O-alpha-L-Arabinopyranosyl-beta-D-glucopyranosyl)oxy]-12-hydroxydammar-24-en-3-yl 2-O-beta-D-glucopyranosyl-beta-D-glucopyranoside<br />
|Common Name=&&Ginsenoside Rb2&&Dammarane beta-D-glucopyranoside deriv.&&Ginsenoside C&&<br />
|CAS=11021-13-9<br />
|KNApSAcK=<br />
}}<br />
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==Spectroscopic Data==<br />
<br />
{| class="wikitable" style="width:80%"<br />
'''Free acid'''<br />
|-<br />
| '''M.P.'''<sup>1</sup> || 200 - 203 °C <br />
|-<br />
| '''IR''' (KBr)<sup>1</sup>|| 3400 (OH), 1620 (C=C) cm<sup>-1</sup><br />
|-<br />
| '''<sup>13</sup>C-NMR''' (C<sub>5</sub>D<sub>5</sub>N, 25.15MHz)<sup>2</sup>|| C-1) 39.4, (2) 26.6, (3) 89.1, (4) 39.6, (5) 56.4, (6) 18.3, (7) 35.1, (8) 39.9, (9) 50.1, (10) 36.8, (11) 30.7, (12) 70.1, (13) 49.4, (14) 51.3, (15) 30.7, (16) 26.4, (17) 51.6, (18) 16.2, (19) 15.9, (20) 83.5, (21) 22.2, (22) 36.3, (23) 23.1, (24) 125.8, (25) 131.0, (26) 25.8, (27) 17.9, (28) 28.0, (29) 16.5, (30) 17.3 '''Glc I''' (1) 105.0, (2) 83.0, (3) 78.1, (4) 71.5, (5) 78.1, (6) 62.7 '''Glc II''' (1) 105.7, (2) 76.9, (3) 79.0, (4) 71.5, (5) 78.7, (6) 62.7 '''Glc III''' (1) 97.9, (2) 74.8, (3) 78.7, (4) 71.5, (5) 76.6, (6) 69.0 '''Ara''' (1) 104.5, (2) 72.0, (3) 73.9, (4) 68.5, (5) 65.5 <br />
|}<br />
'''Permethyl ester'''<br />
{| class="wikitable" style="width:80%"<br />
|-<br />
| '''<sup>1</sup>H-NMR''' (C<sub>5</sub>D<sub>5</sub>N, 100 MHz)<sup>1</sup>|| 0.79-0.98 (5xCH<sub>3</sub>), 1.28 (s, CH<sub>3</sub>), 1.51 (s, CH<sub>3</sub>), 1.65 (s, CH<sub>3</sub>), 3.31-3.60 (s, 13xOCH<sub>3</sub>), 4.23, 4.30, 4.40, 4.65 (each d, each ''J''=7.0 Hz, 4 x anomeric H)<br />
|}<br />
<small>) S. Shibata et al., Chem.Pharm.Bull., 22, 421 (1974)., 2) T. Fuwa et al., Chem.Pharm.Bull., 31, 2120 (1983).</small></div>
Toyama