2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-t-butylaminoethyl)p...

Details 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-t-butylaminoethyl)p... 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-t-butylaminoethyl)p...

C - Chemistry, Metallurgy

07

D

260/297

C07D 213/65 (2006.01) C07D 491/04 (2006.01)

Patent

CA 1037047

ABSTRACT OF THE DISCLOSURE Process for preparing 2-hydroxymethyl-3-hydroxy-6-(1- hvdroxy-2-t-butylaminoethyl)pyridine and the acid addition salts thereof which are useful as .beta.-adrenergic agonist bronchodilators in mammals, and the intermediate compounds 2-hydroxymethl-3- benzyloxypyridine-6-epoxyethane, 2-phenyl-4H-pyrido[3,2-d]-1,3- dioxin-6-epoxyethane and 2,2-disubstituted-4H-pyrido[3,2-d]-1,3- dioxin-6-epoxyethanes, characterized by heating a compound of the formula: Image wherein W is benzyl when Z is hydrogen, or W and Z, when taken together, form the remainder of an acetal or ketal as with at least an equimolar amount of t-butylamine.

215284

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