Synthesis of 1-(isoxazol-3-yl)triazene derivatives. Antimetastatic activity of 3,3-dimethyl-1-(5-methylisoxazol-3-yl)triazene
摘要:
The synthesis of some 3,3-dialkyl-1-(isoxazol-3-yl)triazenes is reported, together with preliminary biological tests on 3,3-dimethyl-1-(5-methylisoxazol-3-yl)triazene 3a. This compound exerts a selective antimetastatic action in mice bearing Lewis lung carcinoma, reducing the weight but not the number of metastases. Some unfavorable properties in the toxicological profile of 3a have discouraged further investigation of this class of compounds.
A copper acetate‐mediated reaction of benzaldehydes with nitromethane to synthesis of 3‐nitroisoxazoles is reported. A variety of nitro‐aryl‐disubstituted isoxazole derivatives can be prepared in moderate to good yields with benign functional group tolerance. This protocol is successfully applied in gram‐scale reaction. Preliminary mechanisticstudies reveal that the aldehyde provided one carbon atom