Table 6.

Extraction abilities in % of receptors 106a and 106b.^a

Receptor	106a	106b
S-Ala-OMe	91.4	84.3
R-Ala-OMe	89.1	89.6
S-Phe-OMe	90.3	87.2
S-Phe-OMe	90.7	82.5
R-Trp-OMe	87.5	85.4
S-Trp-OMe	93.2	89.8
R-phenylglycinol	92.3	83.5
S-phenylglycinol	72.5	87.6

^aExtraction for 1 h from water with 2.0 × 10⁻⁵ M ammonium picrate to CH₂Cl₂; 25 °C