4-(4-PIPERIDIN-1-YL-METHYL-PYRIDIN-2-YL-OXY)-BUT-2-ENYLAMINE;4-[4-(PIPERIDINOMETHYL)PYRIDYL-2-OXY]-CIS-2-BUTENAMINE;4-[4-(PIPERIDINOMETHYL)PYRIDYL-2-OXY]-CIS-2-BUTENAMINE(INTERMEDIATE FOR LAFUTIDINE);4-[4-(Piperidinomethyl)pyridyl;4-[4-(PIPERIDINOMETHYL)