Synthesis of Novel C6-Phosphonated Purine Nucleosides under Microwave Irradiation by SNAr-Arbuzov Reaction
Gui-Rong Qu; Ran Xia; Xi-Ning Yang; Jian-Guo Li; Dong-Chao Wang; Hai-Ming Guo; Journal of Organic Chemistry 73 (2008) 2416–2419; doi:10.1021/jo702680p

data_4023349
_publ_section_title
;
 Synthesis of Novel C6-Phosphonated Purine Nucleosides under
 Microwave Irradiation by SNAr-Arbuzov Reaction
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2416
_journal_page_last               2419
_journal_paper_doi               10.1021/jo702680p
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C16 H19 N4 O3 P'
_chemical_formula_weight         346.32
_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                 100.7350(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5952(10)
_cell_length_b                   21.587(3)
_cell_length_c                   9.6507(11)
_cell_measurement_reflns_used    3811
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      25.42
_cell_measurement_theta_min      2.35
_cell_volume                     1759.3(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      291(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0232
_diffrn_reflns_av_sigmaI/netI    0.0225
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            11656
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.35
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.178
_exptl_absorpt_correction_T_max  0.9591
_exptl_absorpt_correction_T_min  0.9180
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.49
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3264
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0591
_refine_ls_R_factor_gt           0.0482
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0650P)^2^+0.7199P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1262
_refine_ls_wR_factor_ref         0.1343
_reflns_number_gt                2651
_reflns_number_total             3264
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo702680p-File002.cif
_cod_data_source_block           a
_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 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4023349