Total Syntheses of Conformationally Locked Difluorinated Pentopyranose Analogues and a Pentopyranosyl Phosphate Mimetic
Jonathan A. L. Miles; Lisa Mitchell; Jonathan M. Percy; Kuldip Singh; E. Uneyama; Journal of Organic Chemistry 72 (2007) 1575–1587; doi:10.1021/jo0620258

data_4022655
_publ_section_title
;
 Total Syntheses of Conformationally Locked Difluorinated
 Pentopyranose Analogues and a Pentopyranosyl Phosphate Mimetic
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              1575
_journal_page_last               1587
_journal_paper_doi               10.1021/jo0620258
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C12 H16 F2 O6'
_chemical_formula_weight         294.25
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.262(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1162(19)
_cell_length_b                   7.5984(12)
_cell_length_c                   15.339(3)
_cell_measurement_reflns_used    818
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.88
_cell_measurement_theta_min      2.83
_cell_volume                     1324.8(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0473
_diffrn_reflns_av_sigmaI/netI    0.0403
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9151
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.597
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
absorption correction based on 4296 reflections (SADABS); Rint 0.039
before correction and 0.029 after.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.243
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     183
_refine_ls_number_reflns         2323
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0428
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0508P)^2^+0.2508P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0978
_refine_ls_wR_factor_ref         0.1034
_reflns_number_gt                1916
_reflns_number_total             2323
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0620258si20060930_121813.cif
_cod_data_source_block           30
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_hydrogen_treatment' value 'constrained' was replaced with
the value 'constr' as specified in the replacement file
'src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4022655