Two highly hydroxylated 1,3-dihydroisobenzofurans, FR198248 (1) and FR202306 (2), were isolated as peptide deformylase (PDF) inhibitors from Aspergillus flavipes. Compounds 1 and 2 inhibited Staphylococus aureus PDF with IC50 values of 3.6 and 2.5 μm, respectively, and also showed antibacterial activity with an MIC value of 25 μg/ml. In contrast, 6-O-methyl derivative 3 of compound 2 was inactive against both PDF and S. aureus.
从黄曲霉(Aspergillus flavipes)中分离出了两种高度羟化的
1,3-二氢异苯并呋喃--FR198248(1)和 FR202306(2),它们是肽变形酶(PDF)
抑制剂。化合物 1 和 2 可抑制
金黄色葡萄球菌的 PDF,其 IC50 值分别为 3.6 和 2.5 μm,同时还具有抗菌活性,其 MIC 值为 25 μg/ml。相比之下,化合物 2 的 6-O- 甲基衍
生物 3 对 PDF 和
金黄色葡萄球菌均无活性。