METHOD FOR OBTAINING OF TRANS- 4- ALPHA- PHENYL- OCTAHYDRO- 1H- 2- PYRIDINE

摘要

Trans-4a-phenyl and substituted phenyl 2,3,4,4a,5,6 7,7a-octahydro-1H-2-pyrindines of the formula wherein: R1 is hydrogen, C1-C8 alkyl, CH2R3, in which: R3 is C2-C7 alkenyl, C3-C6 cycloalkyl, furyl, or tetrahydrofuryl; R4 and R5 independently are hydrogen, C1-C3 alkyl, or halogen; n is 0, 1, 2, or 3; m is 0 or 1, except that when m is o, n is other than O; X is CO, CHOH, CH=CH, S, or O, except that when n is O, X is other than S or O; R2 is hydrogen, hydroxy, C1-C3 alkoxy, or C1-C3 alkanoyloxy; and the non-toxic pharmaceutically acceptable acid addition salts thereof, are useful as analgesic agents having mixed agonist and antagonist properties. The compounds can be prepared by reacting a 4a-aryl-2-substituted-3,4,4a, 5,6,7-hexahydro-2-pyrindine with hydrogen and platinum oxide.