Evaluation of the Antioxidative Properties of N-Acylamino-Substituted Tricyclic Imides

Table 1

Radical scavenging activity (IC₅₀: 𝜇g/mL) of new compounds.

Compounds	Free radical scavenging activity
	IC50 (𝜇g/mL)
1	35.53
2	81.63
3	28.13
4a	25.78
4b	27.16
4c	16.95
4d	21.80
5a	36.77
5b	39.14
5c	35.58
5d	21.48
6a	19.08
6b	14.24
6c	6.79
6d	22.47
6e	14.10
6f	6.46
BHT	0.90
Trolox	1.85
BHA	1.72