Table 1.

Antiviral activity of Compounds 1–6 (500 μg/mL) against TMV.

Compound	Inhibition Rate (%)
	Local Lesion Assay	Leaf-Disc Method
1	<10	<10
2	<10	10.9 ± 1.1
3	<10	12.7 ± 1.0
4	11.3 ± 1.2	29.6 ± 2.1
5	22.9 ± 2.1	31.9 ± 2.0
6	39.2 ± 2.2	80.0 ± 3.0
Ningnanmycin	90.3 ± 3.4	91.4 ± 3.8