【摘要】 设计并合成了5种取代苯甲酸（2-氧代环戊基）酯3a～3e。采用¹H NMR、¹³C NMR、FT-IR和HRMS等分析手段对所合成的化合物结构进行了表征，考察了它们的紫外吸收特性及光稳定性。结果表明：化合物3a、3c、3d和3e对短波紫外线（UVC）具有较好的吸收性能，其中，化合物3d对UVC的摩尔吸光系数最高为21 540 L·mol^-1·cm^-1,4种化合物在此区域的光稳定顺序为：3c>3d>3e>3a;化合物3b、3c和3d具备中波紫外线UVB和长波紫外线UVA的吸收性能，化合物3c显示了较对照品更佳的吸收性能，其摩尔吸光系数最高为19 600 L·mol^-1·cm^-1,3种化合物在此区域的光稳定顺序为：3b>3c>3d。更多还原

【Abstract】 Five kinds of substituted benzoic acid（2-oxocyclopentyl）esters 3 a～3 e were designed and synthesized.The structures of the synthesized compounds were characterized by ¹H NMR,¹³C NMR,FT-IR and HRMS.Their UV absorption characteristics and photostability were investigated.The results showed that compounds 3 a, 3 c, 3 d and 3 e were sensitive to short wave UV（UVC）,the molar absorption coefficient of compound 3 d to UVC was up to 21 540 L·mol^-1·cm^-1,the order of photostability of the four compounds in this region was 3 c>3 d>3 e>3 a.Compounds 3 b, 3 c and 3 d had the absorption properties of UVB and UVA,the photostability order of the three compounds in this region was 3 b>3 c>3 d.Among the three compounds, 3 C showed better absorption properties than the control, its molar absorption coefficient was 19 600 L·mol^-1·cm^-1.更多还原