Ginsenoside Rb2

Upper classes

IDs and Links
LipidBank	[1]
LipidMaps	[2]
CAS	11021-13-9
KEGG	{{{KEGG}}}
KNApSAcK	[3]
CDX file
MOL file	Ginsenoside Rb2.mol

Ginsenoside Rb2
Structural Information
Systematic Name	(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
Common Name	Ginsenoside Rb2 Dammarane beta-D-glucopyranoside deriv. Ginsenoside C
Symbol
Formula	C53H90O22
Exact Mass	1078.592374564
Average Mass	1079.2685000000001
SMILES	CC(C)(C1OC(O7)C(OC(C8O)OC(CO)C(C8O)O)C(C(C7CO)O)O)C(C2)C(C(C6)C(C(C(C6O)3)(CCC3C(CCC=C(C)C)(C)OC(O4)C(C(C(C4COC(O5)C(C(O)C(O)C5)O)O)O)O)C)(C)C2)(C)CC1
Physicochemical Information
Melting Point
Boiling Point
Density
Optical Rotation
Reflactive Index
Solubility
Spectral Information
Mass Spectra
UV Spectra
IR Spectra
NMR Spectra
Chromatograms

Spectroscopic Data

Free acid

M.P.1	200 - 203 °C
IR (KBr)1	3400 (OH), 1620 (C=C) cm-1
13C-NMR (C5D5N, 25.15MHz)2	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

Permethyl ester

1H-NMR (C5D5N, 100 MHz)1

0.79-0.98 (5xCH3), 1.28 (s, CH3), 1.51 (s, CH3), 1.65 (s, CH3), 3.31-3.60 (s, 13xOCH3), 4.23, 4.30, 4.40, 4.65 (each d, each J=7.0 Hz, 4 x anomeric H)

) S. Shibata et al., Chem.Pharm.Bull., 22, 421 (1974)., 2) T. Fuwa et al., Chem.Pharm.Bull., 31, 2120 (1983).