PROCESS FOR PRODUCING NEW N-HETEROARYL-PURINE-6-AMINE DERIVATIVES AND PHARMACEUTICAL PREPARATIVES CONTAINING SUCH COMPOUNDS

摘要

This invention relates to a N-heteroaryl-purin-6-amine of the formula where R1 is hydrogen, lower alkyl, and arylloweralkyl; R2 and R3 are independently hydrogen, lower alkyl or R2 and R3 taken together are aryl; R4 and R5 are independently hydrogen, lower alkyl, or R4 and R5 taken together are aryl; R6 is hydrogen, lower alkyl, aryl, arylloweralkyl, where R2, R3, R4 and R5 are as defined above, and the pharmaceutically acceptable acid addition salts thereof and where applicable the geometric and optical isomers and racemic mixtures thereof. The compounds of this invention display utility as analgesic and anticonvulsant agents.