3-Phenyl-5-(3,5-dichlorophenyl)-3a,4,6,6a-tetrahydropyrrolo[3,4-d]isoxazoles (III, R = H) and 3-phenyl-5-(3,5-dichlorophenyl)-6a-methyl-3a,4,6,6a-tetrahydropyrrolo[3,4-d]isoxazoles (IV, R = CH3) were prepared by 1,3-dipolar cycloaddition of substituted benzonitrile oxides I to N-(3,5-dichlorophenyl)maleimide (I, R = H), or its methyl derivative II (R = CH3). Cycloaddition to compound II (R = CH3) proceeded regiospecifically. Reduction of IVg with NaBH4 was regio- and stereoselective to yield the hydroxylactams VIIg, VIIIg, and IXg. Antifungal activity of several products was worse than that of commercial preparations.
通过将取代苯甲腈氧化物I加到N-(3,5-二氯苯基)马来酰亚胺(I,R = H)或其甲基衍生物II(R = CH3)上,制备了3-苯基-5-(3,5-二氯苯基)-3a,4,6,6a-四氢吡咯并[3,4-d]异噁唑酮(III,R = H)和3-苯基-5-(3,5-二氯苯基)-6a-甲基-3a,4,6,6a-四氢吡咯并[3,4-d]异噁唑酮(IV,R = CH3)。与化合物II(R = CH3)的环加成反应是区域选择性的。用NaBH4还原IVg,区域和立体选择性地生成羟基内酰胺VIIg,VIIIg和IXg。几种产品的抗真菌活性不如商业制剂。