Table 7 Optimization of 36 for microsomal stability

From: Development of Nurr1 agonists from amodiaquine by scaffold hopping and fragment growing

ID

R3 = 

EC50(Nurr1) (max. act.)a

microsomal half-lifeb

36

0.090 ± 0.005 µM (2.1 ± 0.1-fold)

6.3 ± 0.3 min.

38

<1.2-fold activation

n.d.

39

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inactive (10 µMc)

n.d.

40

inactive (10 µMd)

n.d.

34

0.16 ± 0.06 µM (1.7 ± 0.1-fold)

18 ± 2 min.

41

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0.12 ± 0.03 µM (2.1 ± 0.2-fold)

42 ± 5 min.

42

0.12 ± 0.06 µM (1.5 ± 0.2-fold)

78 ± 7 min.

  1. aNurr1 modulation was determined in a Gal4-Nurr1 hybrid reporter gene assay. Max. activation refers to the maximum effect vs. 0.1% DMSO control. Data are the mean ± SD; n ≥ 3. bStability against degradation by rat liver microsomes was determined by LCMS. n.d. - not determined. cHighest non-toxic concentration.