Table 1.
Chemical structures of main saponins in fermented roots of P. grandiflorum.
| Compounds | Molecula fomula | Types | R1 | R2 | R3 |
|---|---|---|---|---|---|
| Deapi-platycoside E (Platycoside G1) |
C64H104O34 | I | S1 | − | S2 |
| Platycoside E | C69H112O38 | I | S1 | − | S3 |
| Deapi-platycoside D3 | C58H94O29 | I | −Gen | − | S2 |
| Platycoside D3 | C63H102O33 | I | −Gen | − | S3 |
| Deapi-platycoside D | C52H84O24 | I | −Glc | − | S2 |
| Platycodin D | C57H92O28 | I | −Glc | − | S3 |
| Polygalacin D | C57H92O27 | II | −Glc | − | S3 |
| 3″-O-Acetyl polygalacin D | C59H94O28 | II | −Glc | − | S4 |
| Platycodin A | C59H94O29 | I | −Glc | − | S5 |
| 2″-O-Acetyl polygalacin D | C59H94O28 | II | −Glc | − | S5 |
Note: S1, −Glc(6 → 1) Glc(6 → 1)Glc; S2, −Ara(2 → 1) Rha(4 → 1)Xyl; S3, −Ara(2 → 1) Rha(4 → 1) Xyl(3 → 1)Api; S4, −Ara(2 → 1) Rha-Ac-O-3-(4 → 1) Xyl(3 → 1)Api; S5, −Ara(2 → 1) Rha-Ac-O-2-(4 → 1) Xyl(3 → 1)Api; Gen, −Glc(6 → 1) Glc.