Optimization of Potent, Selective, and Orally Bioavailable Pyrrolodinopyrimidine-containing Inhibitors of Heat Shock Protein 90. Identification of Development Candidate 2-amino-4-{4-chloro-2-[2-(4-fluoro-1H-pyrazol-1-yl)ethoxy]-6-methylphenyl}-N-(2,2-difluoropropyl)-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxamide
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | VAPOR DIFFUSION, HANGING DROP | 4.5 | 286 | 5 % Ethylene glycol, 0.1 M phosphate-citrate, pH 4.5, 20 mM TCEP, VAPOR DIFFUSION, HANGING DROP, temperature 286K | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.18 | 43.61 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 43.149 | α = 90 | 
| b = 79.523 | β = 90 | 
| c = 130.101 | γ = 90 | 
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 | 
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 98 | IMAGE PLATE | MAR scanner 345 mm plate | 2007-04-15 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | ROTATING ANODE | RIGAKU | 1.5418 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | |||||||
| 1 | 2.65 | 19.88 | 86.2 | 0.074 | 0.074 | 18.4 | 4.7 | 12218 | 11758 | 31.3 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 2.65 | 2.74 | 79.6 | 0.211 | 0.211 | 6.45 | 4.3 | 1064 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2.65 | 19.88 | 13577 | 11752 | 554 | 86.2 | 0.215 | 0.211 | 0.21 | 0.285 | 0.28 | RANDOM | 20.3 | ||||
| Temperature Factor Modeling | ||||||
|---|---|---|---|---|---|---|
| Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
| -2.32 | 0.21 | 2.11 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation | 
| c_dihedral_angle_d | 21.5 | 
| c_scangle_it | 2.86 | 
| c_mcangle_it | 2.11 | 
| c_scbond_it | 1.89 | 
| c_mcbond_it | 1.27 | 
| c_angle_deg | 0.9 | 
| c_improper_angle_d | 0.64 | 
| c_bond_d | 0.006 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 3304 | 
| Nucleic Acid Atoms | |
| Solvent Atoms | 48 | 
| Heterogen Atoms | 66 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| MAR345dtb | data collection | 
| CNX | refinement | 
| HKL-2000 | data reduction | 
| SCALEPACK | data scaling | 
| CNX | phasing | 














