Structure of 150560-58-0
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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The evaluation of isatin analogues as inhibitors of monoamine oxidase
Prinsloo, Izak F. ; Petzer, Jacobus P. ; Cloete, Theunis T. ; Petzer, Anel ;
Abstract: The small mol., isatin, is a well-known reversible inhibitor of the monoamine oxidase (MAO) enzymes with IC50 values of 12.3 and 4.86μM for MAO-A and MAO-B, resp. While the interaction of isatin with MAO-B has been characterized, only a few studies have explored structure-activity relationships (SARs) of MAO inhibition by isatin analogs. The current study therefore evaluated a series of 14 isatin analogs as in vitro inhibitors of human MAO-A and MAO-B. The results indicated good potency MAO inhibition for some isatin analogs with five compounds exhibiting IC50 < 1μM. 4-Chloroisatin (1b) and 5-bromoisatin (1f) were the most potent inhibitors with IC50 values of 0.812 and 0.125μM for MAO-A and MAO-B, resp. These compounds were also found to be competitive inhibitors of MAO-A and MAO-B with Ki values of 0.311 and 0.033μM, resp. Among the SARs, it was interesting to note that C5-substitution was particularly beneficial for MAO-B inhibition. MAO inhibitors are established drugs for the treatment of neuropsychiatric and neurodegenerative disorders, while potential new roles in prostate cancer and cardiovascular disease are being investigated.
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Keywords: competitive ; inhibition ; isatin ; monoamine oxidase ; structure-activity relationship
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Purchased from AmBeed: 6341-92-0 ; 91-56-5 ; 1127-59-9 ; 611-09-6 ; 7477-63-6 ; 6344-05-4 ; 443-69-6 ; 87-48-9 ; 39603-24-2 ; 608-05-9 ; 17630-76-1 ; 20205-43-0 ; 131609-60-4 ; 150560-58-0 ; 57816-97-4
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CAS No. : | 150560-58-0 |
Formula : | C11H11NO2 |
M.W : | 189.21 |
SMILES Code : | O=C1NC2=C(C=C(C(C)C)C=C2)C1=O |
MDL No. : | MFCD02947184 |
InChI Key : | LFNQRSQKXQFHDB-UHFFFAOYSA-N |
Pubchem ID : | 589802 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H317-H319 |
Precautionary Statements: | P280-P305+P351+P338 |
Num. heavy atoms | 14 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.27 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 56.74 |
TPSA ? Topological Polar Surface Area: Calculated from |
46.17 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.48 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.96 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.37 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.08 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.48 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.67 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.5 |
Solubility | 0.6 mg/ml ; 0.00317 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.55 |
Solubility | 0.528 mg/ml ; 0.00279 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.6 |
Solubility | 0.0472 mg/ml ; 0.000249 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.06 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.75 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.7% | at 20 - 30℃; for 2.16667 h; | To 294 g of 95percent sulfuric acid was added 41.2 g of isonitrosoaceto-p-isopropylanilide at room temperature. Then, the temperature was raised to 30 ° C. over 10 minutes, and the mixture was stirred at the same temperature for 2 hours. After completion of the reaction, the reaction solution was added dropwise to a separate vessel charged with 419 g of water, and the precipitate was filtered. Washed with 1,300 g of water and dried in a dryer at 60 ° C. to obtain 37.3 g of 5-isopropyl isatin. The yield was 98.7percent, the purity was 98.1 wtpercent, and the melting point was 137 to 140 ° C. In this example, the molar ratio of isonitrosoaceto-p-isopropylanilide to sulfuric acid is 1: 14.3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | at 80℃; for 0.416667 h; Cooling with ice | General procedure: A round-bottom flask is charged with concentrated sulfuric acid (33 ml) and is magnetically stirred at 50 °C open to the atmosphere. To the acid was added 2-[(benzyloxy)imino]-N-(4-n-hexylphenyl) (11 g, 32.5 mmole) in portions over 30 minutes. On completion of the addition the mixture was heated at 80 °C for an additional 10 minutes then allowed to cool to room temperature. The dark viscous solution was subsequently added in portions with rapid stirring to ice (750 ml). The crude product was isolated by vacuum filtration, and the filter cake washed with water. The crude product was dried under vacuum to give 6.3 g (85 percent) of an orange solid.#10;#10; |
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