Oxyphenylpropenoic acids as Oral Selective Estrogen Receptor Down- Regulators.

Experimental Data Snapshot

  • Resolution: 2.19 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Investigation of (E)-3-[4-(2-Oxo-3-Aryl-Chromen-4-Yl)Oxyphenyl]Acrylic Acids as Oral Selective Estrogen Receptor Down-Regulators.

Degorce, S.L.Bailey, A.Callis, R.De Savi, C.Ducray, R.Lamont, G.Macfaul, P.Maudet, M.Martin, S.Morgentin, R.Norman, R.A.Peru, A.Pink, J.H.Ple, P.A.Roberts, B.Scott, J.S.

(2015) J Med Chem 58: 3522

  • DOI: https://doi.org/10.1021/acs.jmedchem.5b00066
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A novel estrogen receptor down-regulator, 7-hydroxycoumarin (5, SS5020), has been reported with antitumor effects against chemically induced mammary tumors. Here, we report on our own investigation of 7-hydroxycoumarins as potential selective estrogen receptor down-regulators, which led us to the discovery of potent down-regulating antagonists, such as 33. Subsequent optimization and removal of the 7-hydroxy group led to coumarin 59, which had increased potency and improved rat bioavailability relative to SS5020.

  • Organizational Affiliation

    †Oncology Innovative Medicines Unit, AstraZeneca, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
268Homo sapiensMutation(s): 4 
UniProt & NIH Common Fund Data Resources
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
PHAROS:  P03372
GTEx:  ENSG00000091831 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03372
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 85Z

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
(E)-3-[4-[[3-(4-fluoranyl-2-methyl-phenyl)-7-oxidanyl-2-oxidanylidene-chromen-4-yl]methyl]phenyl]prop-2-enoic acid
C26 H19 F O5
Binding Affinity Annotations 
IDSourceBinding Affinity
85Z BindingDB:  5AK2 IC50: min: 3.9, max: 117 (nM) from 2 assay(s)
Binding MOAD:  5AK2 IC50: 3.9 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.19 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.07α = 90
b = 51.29β = 91.45
c = 83.31γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-22
    Type: Initial release
  • Version 1.1: 2015-05-13
    Changes: Database references
  • Version 1.2: 2018-04-25
    Changes: Data collection
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other