中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1,2,5-噻二唑-3-醇 | 1,2,5-thiadiazol-3(2H)-one | 5728-07-4 | C2H2N2OS | 102.117 |
4-[;3-(Substituted amino)-2-hydroxypropoxyl];-1,2,5-thiadiazole compounds, substituted by a nitrogen containing group in the 3-position of the thiadiazole nucleus which exhibit beta -adrenergic blocking properties and thus are useful in the management of angina pectoris are described. The products are prepared by one of three principal methods (1) reaction of a 4-hydroxy-1,2,5-thiadiazole with epihalohydrin to provide 4-(3-halo-2-hydroxypropoxy)-1,2,5-thiadiazole which, upon treatment with alkali, forms the epoxide which is then reacted with an amine to provide the desired product; (2) reaction of a 3-chloro(or bromo)-4-(3-substituted amino-2-hydroxypropoxy)-1,2,5-thiadiazole with an amine or an N-containing heterocycle that replaces the 3-chloro group; and (3) reductive alkylation of an WHEREIN R is the 1,2,5-thiadiazole-4-yl group.