Spiro-lactam NMDA receptor modulators and uses thereof
Disclosed are compounds having enhanced potency in the modulation of NMDA receptor activity. Such compounds can be used in the treatment of conditions such as depression and related disorders. Orally available formulations and other pharmaceutically acceptable delivery forms of the compounds, including intravenous formulations, are also disclosed.
1. A compound having formula I:
or a stereoisomer, an N-oxide, and/or a pharmaceutically acceptable salt thereof, wherein:
R b is selected from the group consisting of hydrogen, halogen, hydroxyl, cyano, and C 1 -C 6 alkyl;
R 1 is selected from the group consisting of hydrogen, halogen, and C 1 -C 6 alkyl; and
R 2 is selected from the group consisting of hydrogen, halogen, and C 1 -C 6 alkyl.
2. The compound of claim 1 , wherein R b is hydrogen.
3. The compound of claim 1 , wherein R 1 is hydrogen.
4. The compound of claim 2 , wherein R 1 is hydrogen.
5. The compound of claim 1 , wherein R 2 is hydrogen.
6. The compound of claim 2 , wherein R 2 is hydrogen.
7. The compound of claim 3 , wherein R 2 is hydrogen.
8. A pharmaceutical composition comprising the compound of claim 1 ; and a pharmaceutically acceptable excipient.
9. The pharmaceutical composition of claim 8 , suitable for oral administration.
10. The pharmaceutical composition of claim 8 , suitable for intravenous, intranasal, subcutaneous, and/or sublingual administration.