Table 2. Representative Analogues from the Chromane and Indole Subclasses of Spiropiperidine SSTR5 Antagonists.

IC50 values were calculated as the mean of minimally duplicate experiments with less than threefold variance for acceptance of results.
Binding inhibition at 10 μM compound concentration.
Inhibition of forskolin-induced cAMP in CHO cells expressing human (h) or mouse (m) SSTR5.
Maximal inhibition at 8.3 mM compound concentration.
Percent parent compound after incubation at 1 μM for 30 min in 250 mg of protein/mL of microsomes from human (H) or rhesus monkey (Rh). N.D. = not determined.
