One of the active principles of Amanita muscaria, 5-aminomethyl-3-hydroxyisoxazole (I) has been synthesised from 3-bromo-5-methylisoxazole by way of 3-methoxyisoxazole-5-acetic acid (XIII), and from 3-methoxyisoxazole-5-carboxylic acid (XXa) by reduction of its amide with diborane. Analogues of (I) with methyl and ethyl substituents in the 4-position have been prepared similarly from 3-hydroxy-4,5-dimethylisoxazole
毒蝇伞活性成分之一,5-
氨基甲基-3-羟基
异恶唑(I)是由3-溴-
5-甲基异恶唑通过3-甲氧基
异恶唑-5-
乙酸(XIII)和3-甲氧基异恶
唑-5-羧酸(XXa)合成的。通过用乙
硼烷还原酰胺。通过第一种方法类似地由3-羟基-
4,5-二甲基异恶唑和4-乙基-3-羟基-
5-甲基异恶唑制备了(I)在4-位具有甲基和乙基取代基的类似物。(I)具有5个较长碱性侧链的同系物是通过3-甲氧基
异恶唑-5-
丙酸(XXIIb)的Curtius反应,以及通过乙
硼烷还原3-甲氧基
异恶唑-5-
乙酸的酰胺而制得的(I)同源物XIII)和3-甲氧基-4-甲基
异恶唑-5-
乙酸(XXIb)。