tert-Butyl 2,4,6,7-tetrahydro-5H-pyrazolo-[4,3-c]pyridine-5-carboxylate5-Boc-1,4,6,7-tetrahydropyrazolo[4,3-c]pyridinetert-Butyl 2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate2,4,6,7-Tetrahydro-5H-pyrazolo[4,3-c]pyridine, N5-BOC protectedtert-Butyl 6,7-dihydro-2H-pyrazolo[4,3-c]pyridine-5(4H)-carboxylatetert-butyl 2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate