Table 2.

Antifungal activity of compounds 4 against three test fungi at 50 μg/mL.

Compd.	R1	R2	R3	Inhibition (%)
				B. cinerea	R. solani	C. capsici
4a	H	H	Me	62.1 ± 0.2	32.0 ± 0.6	52.1 ± 0.2
4b	H	H	Et	41.1 ± 0.1	63.5 ± 0.7	29.8 ± 0.3
4c	H	H	n-Pr	11.4 ± 0.1	45.7 ± 1.0	27.4 ± 0.3
4d	H	H	i-Pr	29.7 ± 0.1	33.2 ± 0.4	38.0 ± 0.2
4e	H	H	i-Bu	28.3 ± 0.1	48.1 ± 0.3	21.2 ± 0.2
4f	H	H	Ph	26.2 ± 0.3	57.3 ± 0.2	27.7 ± 0.1
4g	H	4-Cl	Me	70.5 ± 0.1	58.0 ± 0.2	60.3 ± 0.1
4h	H	4-Cl	Et	68.6 ± 0.1	53.7 ± 0.2	49.4 ± 0.5
4i	H	4-Cl	n-Pr	68.4 ± 0.4	50.6 ± 0.3	43.4 ± 0.5
4j	H	4-Cl	i-Pr	51.5 ± 0.1	40.2 ± 0.2	43.4 ± 0.2
4k	H	4-Cl	i-Bu	50.8 ± 0.2	31.3 ± 0.6	45.7 ± 0.1
4l	H	4-Cl	Ph	50.5 ± 0.3	47.7 ± 0.3	57.8 ± 0.2
4m	H	4-Cl	Bn	50.8 ± 0.1	21.6 ± 0.4	39.4 ± 0.4
4n	H	4-Me	Me	69.2 ± 0.3	53.9 ± 0.5	58.9 ± 0.4
4o	H	4-Me	Et	76.7 ± 0.1	57.8 ± 0.3	40.5 ± 0.2
4p	H	4-Me	n-Pr	42.3 ± 0.2	52.8 ± 0.2	18.7 ± 0.2
4q	H	4-Me	i-Pr	52.1 ± 0.2	27.9 ± 0.3	31.8 ± 0.4
4r	H	4-Me	i-Bu	13.3 ± 0.3	34.4 ± 0.3	14.7 ± 0.3
4s	H	4-Me	Ph	19.3 ± 0.1	61.4 ± 0.1	27.9 ± 0.2
4t	H	4-F	Et	46.8 ± 0.1	50.2 ± 0.1	66.8 ± 0.0
4u	H	4-Br	Et	64.4 ± 0.1	60.6 ± 0.2	51.7 ± 0.2
4v	H	3-Cl	Me	62.1 ± 0.1	61.1 ± 0.2	60.1 ± 0.2
4w	Me	H	Me	45.9 ± 0.1	28.1 ± 0.2	26.6 ± 0.1
Carbendazim	—	—	—	100 ± 0.0	100 ± 0.0	87.5 ± 0.0