3V9B

Crystal structure of the catalytic domain of PDE4D2 with (S)-N-(3-{1-[1-(3-Cyclopropylmethoxy-4-difluoromethoxyphenyl)-2-(1-oxypyridin-4-yl)-ethyl]-1H-pyrazl-3-yl}phenyl)acetamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Stereoselective synthesis of novel pyrazole derivatives using tert-butansulfonamide as a chiral auxiliary

Park, C.M.Jeon, D.J.

(2012) Org Biomol Chem 10: 2613-2620

  • DOI: 10.1039/c2ob06495b
  • Primary Citation of Related Structures:  
    3V9B

  • PubMed Abstract: 
  • A novel chiral pyrazole derivative was developed by our research program as a potent PDE4 inhibitor for the treatment of anti-inflammatory diseases, such as asthma and chronic obstructive pulmonary disease. The asymmetric synthesis of the inhibitors carrying the pyrazole moiety, including nitrogen directly bonded to a chiral center, through a novel approach is disclosed ...

    A novel chiral pyrazole derivative was developed by our research program as a potent PDE4 inhibitor for the treatment of anti-inflammatory diseases, such as asthma and chronic obstructive pulmonary disease. The asymmetric synthesis of the inhibitors carrying the pyrazole moiety, including nitrogen directly bonded to a chiral center, through a novel approach is disclosed. The key steps of the synthetic sequence begin with the preparation of chiral toluenesulfinyl imine by the condensation of (R)- and (S)-tert-butanesulfinamide with an aldehyde. Next, a corresponding chiral amine synthesis by a stereoselective addition reaction of 4-picolyl lithium to the chiral toluenesulfinyl imine is performed, followed by desulfination. The preparation of the cis-type enaminone from the addition of the enaminone to the corresponding chiral amine is then accomplished, with further transformation into the pyrazole derivatives through the amination of the enaminones and subsequent dehydro-cyclization. A total of 8 steps are completed to produce a 5.5% yield (100% ee).


    Organizational Affiliation

    Bio-Organic Science Division, Korea Research Institute of Chemical Technology, P.O. Box 9, Sinseongro, Yuseong, Daejeon 305-600, Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cAMP-specific 3',5'-cyclic phosphodiesterase 4DA, B, C, D360Homo sapiensMutation(s): 0 
Gene Names: PDE4DDPDE3
EC: 3.1.4.17 (PDB Primary Data), 3.1.4.53 (UniProt)
Find proteins for Q08499 (Homo sapiens)
Explore Q08499 
Go to UniProtKB:  Q08499
NIH Common Fund Data Resources
PHAROS:  Q08499
Protein Feature View
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  • Reference Sequence
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
IHMIC50 :  0.5   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.587α = 90
b = 110.293β = 90
c = 161.607γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2011-12-25 
  • Released Date: 2012-01-18 
  • Deposition Author(s): Kim, H.T., Chang, H.J.

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-18
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references