(B C) ;FREMGANGSMAATE FOR FREMSTILLING AV ET HYDROKLORIDSALT AV 2-HYDROKSYMETYL-3-HYDROKSY-6-(1-HYDROKSY-2-T-BUTYLAMINOETYL)-PYRIDIN

摘要

1510075 Pyrido-dioxin derivative PFIZER Inc 19 Aug 1976 [3 Oct 1975] 34682/76 Heading C2C The novel maleate of a compound of formula is made by reacting the compound with maleic acid in ethyl acetate. The bronchodilator 2- hydroxymethyl - 3 - hydroxy - 6 - (1 - 2 - tbutylaminoethyl)-pyridine dihydrochloride is made by reacting the above maleate with excess hydrogen chloride in methanol solution.