Process for preparing 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-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-hydroxymethyl-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.
制备2-羟甲基-3-羟基-6-(1-羟基-2-叔丁基
氨基乙基)
吡啶及其酸加成盐的方法,这些化合物作为哺乳动物中的β-
肾上腺素能激动剂支气管扩张剂有用,以及中间体化合物2-羟甲基-3-苄氧基
吡啶-6-
环氧乙烷、2-苯基-4H-
吡啶[3,2-d]-1,3-二氧杂
环己烯-6-
环氧乙烷和2,2-二取代-4H-
吡啶[3,2-d]-1,3-二氧杂
环己烯-6-
环氧乙烷。