Table 3.
Chemical stability of 4-Me-DCK (2), seco-DCK (7), 1′-thia-seco-DCK (32), 2-ethyl-DCP (4), and seco-DCP (12) in acidic conditions a
| Purity (area %)
|
||
|---|---|---|
| Reaction Time = 1 min | Reaction Time = 30 min | |
| 2 | 100% | 64% |
| 7 | 100% | 77% |
| 32 | 100% | 96% |
| 4 | 100% | 91% |
| 12 | 100% | 100% |
Condition: 1% HCl/MeOH/rt; Compound purity: peak area percentage by HPLC determination.