论文部分内容阅读
With maleic acid as the raw material,6-methyl-4-hydroxy-2-pyrone,6-methyl-4-alkoxy-2-pyrone and 6-methyl-4-hydroxy-3-acyl-2-pyrone derivatives were obtained via loop closing,O-alkylation and acylation reaction,and antifungal activity was also tested. Stru