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Table 7 Experimental activities (EA, − log IC50) and predicted activities (PA) and residual values for analyzed compounds according to CoMFA and CoMSIA

From: Isolation, bioassay and 3D-QSAR analysis of 8-isopentenyl flavonoids from Epimedium sagittatum maxim. as PDE5A inhibitors

Compd

EA

CoMFA

CoMSIA

PA

Residual

PA

Residual

1

5.082

5.048

0.034

5.096

− 0.014

2

5.490

5.475

0.015

5.495

− 0.005

3

5.262

5.264

− 0.002

5.249

0.013

4t

3.389

4.173

− 0.784

4.347

− 0.958

5

3.447

3.415

0.032

3.482

− 0.035

6

3.166

3.195

− 0.029

3.129

0.037

7

5.658

5.553

0.105

5.600

0.058

8

6.444

6.456

− 0.012

6.444

0.000

9

7.131

7.227

− 0.096

7.149

− 0.018

10t

5.745

5.449

0.296

5.183

0.562

11

5.222

5.265

− 0.043

5.211

0.011

12t

5.229

5.335

− 0.106

5.408

− 0.179

13

5.155

5.208

− 0.053

5.208

− 0.053

14

5.208

5.148

0.06

5.183

0.025

15

4.342

4.389

− 0.047

4.364

− 0.022

16

7.847

7.779

0.068

7.857

− 0.011

17

6.222

6.254

− 0.032

6.221

0.001

  1. t test set compounds