TABLE 1.

Antioxidant and α-glycosidase activities of compounds 1–25.

Compound	DPPH (IC50, μM)	ORAC (μMole TE/μMole)	α-glucosidase (IC50, μM)	α-glucosidase in caco-2 (IC50, μM)
1	>100	1.0 ± 0.04	>500	–
2	>100	1.2 ± 0.09	239.1 ± 5.9	–
3	>100	2.1 ± 0.5	>500	–
4	1.7 ± 0.02	6.8 ± 0.05	5.9 ± 0.6	–
5	10.9 ± 0.3	6.0 ± 0.09	2.8 ± 0.2	0.38 ± 0.01
6	1.4 ± 0.01	5.7 ± 0.3	10.9 ± 1.3	0.29 ± 0.02
7	1.1 ± 0.03	4.5 ± 0.4	18.3 ± 0.9	0.36 ± 0.01
8	57.8 ± 0.8	0.5 ± 0.01	129.8 ± 3.5	–
9	1.9 ± 0.04	0.5 ± 0.06	464.5 ± 23.6	–
10	>100	0.5 ± 0.03	>500	–
11	1.6 ± 0.01	1.2 ± 0.5	34.4 ± 1.1	–
12	1.6 ± 0.02	1.4 ± 0.01	64.4 ± 1.2	–
13	>100	0.4 ± 0.07	152.5 ± 9.6	–
14	4.0 ± 0.2	0.4 ± 0.06	128.3 ± 2.3	–
15	3.6 ± 0.06	2.1 ± 0.06	13.1 ± 0.2	0.11 ± 0.02
16	3.2 ± 0.1	2.0 ± 0.06	7.9 ± 0.3	0.36 ± 0.01
17	5.3 ± 0.06	4.8 ± 0.3	25.1 ± 0.7	–
18	3.7 ± 0.07	3.7 ± 0.1	25.0 ± 0.8	–
19	1.8 ± 0.04	2.6 ± 0.1	19.4 ± 0.1	–
20	5.9 ± 0.08	6.1 ± 0.2	8.9 ± 0.4	0.11 ± 0.01
21	1.6 ± 0.04	3.9 ± 0.1	4.0 ± 0.08	0.12 ± 0.01
22	1.7 ± 0.02	2.8 ± 0.3	10.1 ± 0.1	–
23	>100	0.1 ± 0.01	>500	–
24	37.8 ± 0.1	0.8 ± 0.07	>500	–
25	11.0 ± 0.1	1.7 ± 0.07	>500	–
VC	2.8 ± 0.03
Acarbose			265.4 ± 10.2	157.7 ± 14.0

– not tested.