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. 2013 Dec 4;18(12):14892–14919. doi: 10.3390/molecules181214892

Table 3.

Structures of gem-dimethylated oleanes isolated from Gymnema sylvestre.

No. CAS Common Name R1 R2 R3 R4 R5 R6
1 465-94-1 Longispinogenin H OH CH2OH H H CH3
2 474-15-7 Chichipegenin H OH CH2OH OH H CH3
3 53187-93-2 Sitakisogenin H OH CH2OH H OH CH3
4 862377-55-7 3β,16β,22β,28-tetrahydroxy-olean-12-en-30-oic acid See Figure 2
5 287390-11-8 Longispinogenin 3-O-β-d-glucuronopyranoside GlcA OH CH2OH H H CH3
6 287389-94-0 21β-O-Benzoylsitakisogenin
3-O-β-d-glucuronopyranoside		 GlcA OH CH2OH H Bz CH3
7 873799-50-9 Gymnemic acid A GlcA OH CH2OH H H COOH
8 1096581-47-3 Gymnemoside W2 GlcA-OMe OH CH2OH H OH CH3
9 330595-34-1 Longispinogenin 3-O-β-d-glucopyranosyl-(1→3)-β-d-glucuronopyranoside potassium salt B OH CH2OH H H CH3
10 212775-47-8 Alternoside VII B OH CH2OH OH H CH3
11 330595-32-9 21β-O-Benzoylsitakisogenin 3-O-β-d-glucopyranosyl-(1→3)-β-d-glucuronopyranoside B OH CH2OH H Bz CH3
12 330595-36-3 29-Hydroxylongispinogenin 3-O-β-d-glucopyranosyl-(1→3)-β-d-glucuronopyranoside potassium salt B OH CH2OH H H CH2OH
13 1096581-44-0 Gymnemoside W1 A OH CH2OGlc H H CH3
14 256510-01-7 Alternoside XIX C OH CH2OGlc H H CH3
15 1422031-89-7 6-Deoxy-α-l-Rhamnopyranoside, (3β,16β,22α)-16-(hydroxy)-28-[(6-deoxy-α-L-mannopyranosyl)oxy]-22-hydroxyolean-12-en-3-yl 3-O-β-d-glucopyranosyl D OH CH2O(6-Deoxy-α-l)Man OH H CH3
16 212775-23-0 Alternoside II B OAc CH2O(6-Deoxy-α-l)Man OH H CH3
17 508-02-1 Oleanolic acid H H H H H CH3
18 240140-86-7 Oleanolic acid 3-O-β-d-glucopyranosyl-(1→6)-β-d-glucopyranoside A H COOH H H CH3
19 287389-96-2 Oleanolic acid 3-O-β-d-xylopyranosyl(1→6)-β-d-glucopyranosyl(1→6)-β-d-glucopyranoside C H COOH H H CH3
20 14162-53-9 Oleanolic acid 28-O-β-d-glucopyranoside H H COOGlc H H CH3
21 78454-20-3 Silphioside B Glc H COOGlc H H CH3
22 287389-95-1 3-O-β-d-Glucopyranosyl(1→6)-β-d-glucopyranosyl oleanolic acid 28-O-β-d-glucopyranosyl ester A H COOGlc H H CH3
23 287389-97-3 3-O-β-d-Xylopyranosyl(1→6)-β-d-glucopyranosyl(1→6)-β-d-glucopyranosyl oleanolic acid 28-β-d-glucopyranosyl ester C H COOGlc H H CH3
24 287389-98-4 3-O-β-d-Glucopyranosyl(1→6)-β-d-glucopyranosyl oleanolic acid 28-β-d-glucopyranosyl(1→6)-β-d-glucopyranosyl ester A H COO-A H H CH3
25 1422031-87-5 3β,16β,22α-Trihydroxy-olean-12-ene 3-O-β-d-xylopyranosyl-(1→6)-β-d-glucopyranosyl-(1→6)-β-d-glucopyranoside C OH CH3 OH H CH3