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Binding constants and enantiomeric distinction factors of chiral porphyrin-amino-acid dipeptide receptors in chloroform at 20 °C.
| Guest | Kass [M−1], 192a | KR/KS | Kass [M−1], 192b | KR/KS |
| S-Ala-OMe | 320 | 1.4 | 155.2 ± 12 | 3.1 |
| R-Ala-OMe | 450 | 488.6 ± 20 | ||
| S-Val-OMe | 621 | 1.2 | 175.2 ± 10 | 2.9 |
| R-Val-OMe | 713 | 502.2 ± 15 | ||
| S-Leu-OMe | 1030 | 1.2 | 179.8 ± 13 | 4.9 |
| R-Leu-OMe | 1290 | 881.5 ± 22 | ||
| S-Phe-OMe | 679 | 2.2 | 420.7 ± 10 | 1.1 |
| R-Phe-OMe | 1490 | 442.3 ± 10 | ||
| S-Thr-OMe | n.d. | n.d. | 537.6 ± 15 | 2.6 |
| R-Thr-OMe | n.d. | 1391.3 ± 25 | ||
