1EAS

NONPEPTIDIC INHIBITORS OF HUMAN LEUKOCYTE ELASTASE. 3. DESIGN, SYNTHESIS, X-RAY CRYSTALLOGRAPHIC ANALYSIS, AND STRUCTURE-ACTIVITY RELATIONSHIPS FOR A SERIES OF ORALLY ACTIVE 3-AMINO-6-PHENYLPYRIDIN-2-ONE TRIFLUOROMETHYL KETONES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Nonpeptidic inhibitors of human leukocyte elastase. 3. Design, synthesis, X-ray crystallographic analysis, and structure-activity relationships for a series of orally active 3-amino-6-phenylpyridin-2-one trifluoromethyl ketones.

Bernstein, P.R.Andisik, D.Bradley, P.K.Bryant, C.B.Ceccarelli, C.Damewood Jr., J.R.Earley, R.Edwards, P.D.Feeney, S.Gomes, B.C.Kosmider, B.J.Steelman, G.B.Thomas, R.M.Vacek, E.P.Veale, C.A.Williams, J.C.Wolanin, D.J.Woolson, J.A.

(1994) J.Med.Chem. 37: 3313-3326


  • PubMed Abstract: 
  • A series of nonpeptidic inhibitors of human leukocyte elastase (HLE) is reported. These trifluoromethyl ketone-based inhibitors contain a 3-amino-6-phenylpyridone group as a central template. The effect of varying the N-3 substituent in these inhibit ...

    A series of nonpeptidic inhibitors of human leukocyte elastase (HLE) is reported. These trifluoromethyl ketone-based inhibitors contain a 3-amino-6-phenylpyridone group as a central template. The effect of varying the N-3 substituent in these inhibitors on in vitro potency, physical properties, and oral activity in a hamster based, HLE-induced lung damage model is described. The variety of substituents at this position that have little effect on in vitro potency supports the idea that this region of the molecule does not interact strongly with the enzyme. One exception to this generality is 13k, which is substituted with a (4-acetamidophenyl)sulfonyl group. This compound has a K(i) of 0.7 nM and is, in vitro, the most potent inhibitor in the series. In contrast, variation of the N-3 substituent was found to have a dramatic effect on activity after oral administration. Several analogs, including the parent amine, 7, formamide, 2u, benzyl sulfamide, 13e, and benzyl sulfonamide, 13f, show significant activity when administered at an oral dose of 2.5 mg/kg. Support for the modeling-based design concepts was obtained through in vitro SAR results and X-ray crystallographic analysis of the complex between 13d and porcine pancreatic elastase (PPE), a closely related enzyme.


    Related Citations: 
    • Nonpeptidic Inhibitors of Human Leukocyte Elastase. 1. The Design and Synthesis of Pyridone-Containing Inhibitors
      Warner, P.,Green, R.C.,Gomes, B.C.,Williams, J.C.
      (1994) J.Med.Chem. 37: 3090
    • Nonpeptidic Inhibitors of Human Leukocyte Elastase. 6. Design of a Potent, Intratracheally Active, Pyridone-Based Trifluoromethyl Ketone
      Bernstein, P.R.,Gomes, B.C.,Kosmider, B.J.,Vacek, E.P.,Williams, J.C.
      () TO BE PUBLISHED --: --
    • X-Ray Diffraction Analysis of the Inhibition of Porcine Pancreatic Elastase by a Peptidyl Trifluoromethylketone
      Takahashi, L.H.,Radhakrishnan, R.,Rosenfield, R.E.,Meyer, E.F.,Trainor, D.A.,Stein, M.
      (1988) J.Mol.Biol. 201: 423
    • Nonpeptidic Inhibitors of Human Leukocyte Elastase. 4. Design, Synthesis,in Vitro, and in Vivo Activity of a Series of Beta-Carbolinone-Containing Trifluoromethyl Ketones
      Veale, C.A.,Damewood, J.R.,Steelman, G.B.,Bryant, C.,Gomes, B.,Williams, J.
      () TO BE PUBLISHED --: --
    • Nonpeptidic Inhibitors of Human Leukocyte Elastase. 5. Design, Synthesis, and X-Ray Crystallography of a Series of Orally Active 5-Amino-Pyrimidin-6-One-Containing Trifluoromethylketones
      Veale, C.A.,Bernstein, P.R.,Bryant, C.,Ceccarelli, C.,Damewood, J.R.,Earley, R.,Feeney, S.W.,Gomes, B.,Kosmider, B.J.,Steelman, G.B.,Thomas, R.M.,Vacek, E.P.,Williams, J.C.,Wolanin, D.J.,Woolson, S.
      () TO BE PUBLISHED --: --
    • Nonpeptidic Inhibitors of Human Leukocyte Elastase. 2. Design, Synthesis and in Vitro Activity of a Series of 3-Amino-6-Arylpyridin-2-One Trifluoromethyl Ketones
      Damewood, J.R.,Edwards, P.D.,Feeney, S.,Gomes, B.C.,Steelman, G.B.,Tuthill, P.A.,Warner, P.,Williams, J.C.,Woolson, S.A.,Wolanin, D.,Veale, C.
      (1994) J.Med.Chem. 37: 3303
    • Design, Synthesis, and Kinetic Evaluation of a Unique Class of Elastase Inhibitors, the Peptidyl Alpha-Ketobenzoxazoles,and the X-Ray Crystal Structure of the Covalent Complex between Porcine Pancreatic Elastase and Ac-Ala-Pro-Val-2-Benzoxazole
      Edwards, P.D.,Meyer, E.F.,Vijayalakshmi, J.,Tuthill, P.A.,Andisik, D.A.,Gomes, B.,Strimpler, A.
      (1992) J.Am.Chem.Soc. 114: 1854
    • Crystal Structure of the Covalent Complex Formed by a Peptidyl Alpha,Alpha-Difluoro-Beta-Keto Amide with Porcine Pancreatic Elastase at 1.78-Angstrom Resolution
      Takahashi, L.H.,Radhakrishnan, R.,Rosenfield, R.E.,Meyer, E.F.,Trainor, D.A.
      (1989) J.Am.Chem.Soc. 111: 3368
    • Design of Orally Active, Nonpeptidic Inhibitors of Human Leukocyte Elastase
      Brown, F.J.,Andisik, D.W.,Bernstein, P.R.,Bryant, C.B.,Ceccarelli, C.,Damewood, J.R.,Edwards, P.D.,Earley, R.,Feeney, S.W.,Green, R.C.,Gomes, B.,Kosmider, B.J.,Krell, R.,Shaw, A.,Steelman, G.B.,Thomas, R.M.,Vacek, E.P.,Veale, C.A.,Tuthill, P.A.,Warner, P.,Williams, J.C.,Wolanin, D.J.,Woolson, S.A.
      (1994) J.Med.Chem. 37: 1259


    Organizational Affiliation

    Zeneca Pharmaceuticals Group, A Business Unit of ZENECA Inc., Wilmington, Delaware 19897.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PORCINE PANCREATIC ELASTASE
A
240Sus scrofaGene Names: CELA1 (ELA1)
EC: 3.4.21.36
Find proteins for P00772 (Sus scrofa)
Go to Gene View: CELA1
Go to UniProtKB:  P00772
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
TFK
Query on TFK

Download SDF File 
Download CCD File 
A
3-[[(METHYLAMINO)SULFONYL]AMINO]-2-OXO-6-PHENYL-N-[3,3,3-TRIFLUORO-1-(1-METHYLETHYL)-2-OXOPHENYL]-1(2H)-PYRIDINE ACETAMIDE
C20 H23 F3 N4 O5 S
MYFMPKCOIMRDDD-KRWDZBQOSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
TFKKi: 18 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.950α = 90.00
b = 57.730β = 90.00
c = 75.560γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1994-11-22 
  • Released Date: 1995-02-07 
  • Deposition Author(s): Ceccarelli, C.

Revision History 

  • Version 1.0: 1995-02-07
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-02-22
    Type: Database references