Table 6. α-Glucosidase Inhibitory Activities of the Isolated Compounds 1−25.^a .

Compound b	IC50 (μM)
1	8.57±0.57
2	165.35±11.55
3	310.10±12.73
4	165.64±11.73
5	369.89±31.24
6	600.31±45.88
7	197.05±9.26
8	178.34±0.35
9	408.91±38.70
10	727.97±67.74
11	932.51±98.75
12	67.30±5.51
13	49.96±3.18
14	225.29±4.79
15	116.14±6.75
16	31.70±3.38
Acarbose	119.15±4.90

^aValues are the mean ± SD; n = 3. ^b Compounds 17−25 did not show α-glucosidase inhibitory activity (IC50 >1000 μM).