- Amino Alcohol Acrylonitriles as Activators of the Aryl Hydrocarbon Receptor Pathway: An Unexpected MTT Phenotypic Screening Outcome
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Lead (Z)-N-(4-(2-cyano-2-(3,4-dichlorophenyl)vinyl)phenyl)acetamide, 1 showed MCF-7 GI50=30 nM and 400-fold selective c.f. MCF10A (normal breast tissue). Acetamide moiety modification (13 a-g) to introduce additional hydrophobicity was favoured with MCF-7 breast cancer cell activity enhanced at 1.3 nM. Other analogues were potent against the HT29 colon cancer cell line at 23 nM. Textbook SAR data was observed in the MCF-7 cell line, in an MTT assay, via the ortho (17 a), meta (17 b) and para (13 f). The amino alcohol -OH moiety was pivotal, but no stereochemical preference noted. But, these data did not fit our homology modelling expectations. Aberrant MTT ((3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide) screening results and metabolic interference confirmed by sulforhodamine B (SRB) screening. Interfering analogues resulted in 120 and 80-fold CYP1A1 and CYP1A2 amplification, with no upregulation of SULT1A1. This is consistent with activation of the AhR pathway. Piperidine per-deuteration reduced metabolic inactivation. 3-OH / 4-OH piperidine analogues showed differential MTT and SRB activity supporting MTT assay metabolic inactivation. Data supports piperidine 3-OH, but not the 4-OH, as a CYP substrate. This family of β-amino alcohol substituted 3,4-dichlorophenylacetonitriles show broad activity modulated via the AhR pathway. By SRB analysis the most potent analogue was 23 b, (Z)-3-(4-(3-(4-phenylpiperidin-1-yl)-2-hydroxypropoxy)phenyl)-2-(3,4-dichlorophenyl)-acrylonitrile.
- Baker, Jennifer R.,Gilbert, Jayne,McCluskey, Adam,Russell, Cecilia C.,Sakoff, Jennette A.
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- Structure and Property Guided Design in the Identification of PRMT5 Tool Compound EPZ015666
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The recent publication of a potent and selective inhibitor of protein methyltransferase 5 (PRMT5) provides the scientific community with in vivo-active tool compound EPZ015666 (GSK3235025) to probe the underlying pharmacology of this key enzyme. Herein, we report the design and optimization strategies employed on an initial hit compound with poor in vitro clearance to yield in vivo tool compound EPZ015666 and an additional potent in vitro tool molecule EPZ015866 (GSK3203591).
- Duncan, Kenneth W.,Rioux, Nathalie,Boriack-Sjodin, P. Ann,Munchhof, Michael J.,Reiter, Lawrence A.,Majer, Christina R.,Jin, Lei,Johnston, L. Danielle,Chan-Penebre, Elayne,Kuplast, Kristy G.,Porter Scott, Margaret,Pollock, Roy M.,Waters, Nigel J.,Smith, Jesse J.,Moyer, Mikel P.,Copeland, Robert A.,Chesworth, Richard
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p. 162 - 166
(2016/03/01)
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- PRMT5 INHIBITORS AND USES THEREOF
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Described herein are compounds of Formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof:wherein Y1 is of formula (?) or formula (y):Ring Y is a 5- to 6-membered heteroaryl ring; and V4, V5, Rx, x, y, and n are as defined herein. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described.
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Paragraph 00441; 00442
(2016/04/20)
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- PRMT5 INHIBITORS AND USES THEREOF
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Described herein are compounds of formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical com-positions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described.
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Paragraph 00351
(2014/07/08)
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- PRMT5 INHIBITORS AND USES THEREOF
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Described herein are compounds of Formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described
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Paragraph 00306
(2014/07/08)
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- TETRAHYDROISOQUINOLINE COMPOUNDS FOR TREATMENT OF CNS DISORDERS
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Certain tetrahydroisoquinoline compounds are histamine H3 receptor and serotonin transporter modulators useful in the treatment of histamine H3 receptor-and serotonin-mediated diseases.
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Page/Page column 73
(2010/11/08)
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