Table 3.

¹³C-NMR Data for Ginsenosides Re (1), Rf (2), Rg2 (3), and 20-gluco-Rf (4) (100 MHz, pyridine-d_5, δ_C)

Carbon No.	Ginsenoside Re		Ginsenoside Rf		Ginsenoside Rg2		20-gluco-ginsenoside Rf
	PGB16+17-9-15	Refs1)	PGB16+17-7-16	Refs1)	PGB9+10-10+11-5-13	Refs1)	PGB16+17-9-12
1	39.438	–	39.542		39.625		39.499
2	27.842	–	27.888		27.736		27.836
3	78.395	–	78.706		78.304		78.694
4	40.065	–	40.308		39.997		40.249
5	60.849	–	61.501		60.788		61.420
6	74.550	78.7 [8]	79.911		74.308		79.945
7	46.025		45.176		46.048		44.973
8	41.248		41.278		41.157	39.3 [9]	41.212
9	49.589		50.241		49.703		49.986
10	39.458		39.769		39.390	41.0 [9]	39.703
11	31.012		32.195	31.1 [14]	32.050		30.983
12	70.228		71.085		71.002		70.201
13	49.103		48.368		48.156		49.204
14	51.454		51.773		51.682		51.426
15	30.822		31.391		31.330	29.9 [13]	30.756
16	26.720		26.963		26.864		26.707
17	51.727		54.851		54.654		51.578
18	17.386	17.4 [7], 17.7 [8], 17.4 [11]	17.568	17.6 [14]	17.196	17.7 [8], 17.6 [9]. 17.46 [13]	17.660
19	17.628	17.2 [4], 17.8 [8]	17.757	17.5 [14]	17.667	17.7 [8], 17.5 [9], 17.29 [13]	17.600
20	83.270		73.072		72.996		83.274
21	22.421		27.160		27.023		22.407
22	36.092		35.940		35.811		36.155
23	23.338		23.149		23.020		23.302
24	125.891		126.316		126.202		125.896
25	130.850		130.767		130.691		130.855
26	25.886		25.969		25.901		25.865
27	17.886		17.848		17.757	16.8 [9], 17.34 [13]	17.865
28	32.285		32.195		32.187		32.128
29	17.780	17.3 [8], 17.1 [11]	16.916	17.6 [14]	17.667	17.0 [8], 16.87 [13]	16.857
30	17.325	17.6 [8]	16.969	16.7 [14]	16.969	17.2 [8]	17.228
6-O-glc-1′	101.832		103.872		101.703		103.793
2′	79.433		79.911		79.312	78.18 [13]	79.505
3′	78.569		79.722	78.7 [14]	78.516	79.61 [13]	79.884
4′	72.556		71.790		72.576		72.332 a
5′	78.288		77.917	79.8 [14]	78.304		78.507 b
6′	63.086		63.010		63.040		63.369 c
2′-O-rha-1′′	101.908				101.817
2′′	72.458				72.336
3′′	72.291				72.177
4′′	74.164				74.057
5′′	69.508				69.417
6′′	18.872				18.766
2′-O-glc-1′′	–		103.872		–		103.762
2′′	–		76.074		–		76.009
3′′	–		78.478		–		78.254
4′′	–		72.404		–		71.627 ∗
5′′	–		78.122	79.8 [14]	–		77.875 ∗
6′′	–		63.434		–		62.899 ∗
20-O-glc-1′′′	98.253		–		–		103.762
2′′′	75.172		–		–		76.009
3′′′	79.221		–		–		78.398
4′′′	71.570		–		–		72.332
5′′′	78.395		–		–		78.254
6′′′	62.843		–		–		62.899

NMR, nuclear magnetic resonance.

¹⁾The chemical shifts showing the difference > 1.0 ppm from those of this study were exhibited and methyl signals that are listed in wrong order were exhibited. * Assignments with the same alphabetical superscript in a single column might be reversed.