Synthesis of Diastereomerically Pure Nucleotide Phosphoramidates
Bruce S. Ross; P. Ganapati Reddy; Hai-Ren Zhang; Suguna Rachakonda; Michael J. Sofia; Journal of Organic Chemistry 76 (2011) 8311–8319; doi:10.1021/jo201492m

data_4026651
_publ_section_title
;
 Synthesis of Diastereomerically Pure Nucleotide Phosphoramidates
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8311
_journal_page_last               8319
_journal_paper_doi               10.1021/jo201492m
_journal_volume                  76
_journal_year                    2011
_chemical_formula_sum            'C18 H21 N2 O7 P'
_chemical_formula_weight         408.34
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.891(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.3312(4)
_cell_length_b                   15.3388(8)
_cell_length_c                   23.7807(13)
_cell_measurement_temperature    100(1)
_cell_volume                     1942.2(2)
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'CCD Area Detector'
_diffrn_measurement_device_type  'Bruker APEXII'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0581
_diffrn_reflns_av_sigmaI/netI    0.0603
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            6909
_diffrn_reflns_theta_full        25.09
_diffrn_reflns_theta_max         25.09
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    0.185
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6093
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2007)'
_exptl_crystal_density_diffrn    1.397
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.402
_refine_diff_density_min         -0.559
_refine_diff_density_rms         0.100
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.119
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     512
_refine_ls_number_reflns         6909
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.119
_refine_ls_R_factor_all          0.0963
_refine_ls_R_factor_gt           0.0847
_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^)+(0.0000P)^2^+14.0738P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1899
_refine_ls_wR_factor_ref         0.1963
_reflns_number_gt                6173
_reflns_number_total             6909
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo201492m_si_002.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      'P 21 '
_cod_database_code               4026651