Table 2.
Physical Characterization of Flavone, Flavanol, and Flavanone Derivatives
| compd no. | mp (°C) | MS | formula | anal. |
|---|---|---|---|---|
| 2 | 201 | 313 (CI) | C18H16O5·0.75H2O | C,H |
| 3a | 111–114 | 355 (FAB) | C21H22O5 | C,H |
| 3b | 100–101 | 337 (CI) | C19H18O5 | C,H |
| 4 | 90–93 | 397 (CI) | C24H28O5 | C,H |
| 6 | 153–156 | 373 (CI) | C20H20O7 | C,H |
| 7 | 122–123 | 415 (FAB) | C23H26O7 | C,H |
| 8 | 115–116 | 443 (CI) | C25H30O7 | C,H |
| 10 | oil | 293 (CI) | C18H12O4 | C,H |
| 11b | 121 | 256 (EI) | C15H9O2Cl·0.25EtOH | C,H |
| 11c | 170–172 | 257 (CI) | C15H9O2Cl·O.1H2O | C,H |
| 11d | 184–186 | 290 (EI) | C15H8O2Cl2 | a |
| 15 | 160–163 | 297 (CI) | C18H16O4·0.25H2O | C,H |
| 16 | 135–138 | 294 (EI) | C18H14O4 | a,b |
| 19 | 175–178 | 319 (CI) | C20H14O4·0.25H2O | C,H |
| 20 | 148–151 | 333 (CI) | C21H16O4 | C,H |
| 21 | 132 | 347 (CI) | C22H18O4 | C,H |
| 22 | 162–165 | 344 (EI) | C22H16O4·0.5H2O | C,H |
| 23 | 162–165 | 358 (EI) | C23H18O4 | C,H |
| 24 | 150–154 | 320 (CI) | C19H14NO4 | C,H |
a
High-resolution mass in FAB+ mode m/z determined to be within acceptable limits. 11d: calcd, 289.9901; found, 289.9893. 16: calcd, 294.0892; found, 294.0889.
b
C: calcd, 73.46; found, 74.30. H: calcd, 4.80; found, 5.27.