Synthesis of Optically Pure 4-Fluoro-Glutamines as Potential Metabolic Imaging Agents for Tumors
Wenchao Qu; Zhihao Zha; Karl Ploessl; Brian P. Lieberman; Lin Zhu; David R. Wise; Craig B. Thompson; Hank F. Kung; Journal of the American Chemical Society 133 (2011) 1122–1133; doi:10.1021/ja109203d

data_4105540
_publ_section_title
;
 Synthesis of Optically Pure 4-Fluoro-Glutamines as Potential Metabolic
 Imaging Agents for Tumors
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1122
_journal_page_last               1133
_journal_paper_doi               10.1021/ja109203d
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C5 H9 F N2 O3'
_chemical_formula_weight         164.14
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.9990(12)
_cell_length_b                   9.208(3)
_cell_length_c                   16.145(4)
_cell_measurement_temperature    143(1)
_cell_volume                     743.2(4)
_computing_data_collection       'CrystalClear (Rigaku, 1999)'
_computing_data_reduction        'CrystalClear (Rigaku, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare, 1999)'
_diffrn_ambient_temperature      143(1)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'CCD Area Detector'
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       'phi and omega rotations'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0239
_diffrn_reflns_av_sigmaI/netI    0.0155
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7337
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8692
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.467
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.132
_refine_diff_density_min         -0.180
_refine_diff_density_rms         0.042
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.092
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         1302
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.0297
_refine_ls_R_factor_gt           0.0288
_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^)+(0.0413P)^2^+0.1733P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0719
_refine_ls_wR_factor_ref         0.0728
_reflns_number_gt                1270
_reflns_number_total             1302
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja109203d_si_001.cif
_cod_data_source_block           shelxl
_cod_original_cell_volume        743.2(3)
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_database_code               4105540