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The yields, colours, and ESI-MS data of Cds. 8–14.
| Cd. 8 | Cd. 9 | Cd. 10 | Cd. 11 | Cd.12 | Cd. 13 | Cd. 14 | |
|---|---|---|---|---|---|---|---|
| Yield (%) | 45.1 | 61.2 | 70.2 | 86.3 | 85.3 | 85.5 | 93.5 |
| Color | White powder | White powder | White powder | Light yellow lamellar crystal | Orange lamellar crystal | White powder | Colorless needle crystal |
| m.p. (°C) | >300 a | >246 a | 172–173 | 237–238 | 209–210 | 288–289 | 231–232 |
| ESI-MS (m/z) | 243.00 c | 220.1 c | 250.18 b | 278.3 b | 306.3 b | 282.2 b | 262.2 c |
a Decomposing temperature; b [M + 1]+; c [M − 1]−.
