abstract |
PCT No. PCT/US92/06819 Sec. 371 Date Sep. 15, 1994 Sec. 102(e) Date Sep. 15, 1994 PCT Filed Aug. 20, 1992 PCT Pub. No. WO93/06099 PCT Pub. Date Apr. 1, 1993.The present invention relates to novel fused tricycylic nitrogen containing heterocyclic compounds, and specifically, to compounds of the formula <IMAGE> I wherein R1, R2 and R3 are as defined below. These novel compounds are useful in the treatment of inflammatory and central nervous system disorders, as well as other disorders. |