Synthesis of (2S,4S)- and (2S,4R)-5-fluoroleucine and (2S,4S)-[5,5-2H2]-5-fluoroleucine.
Charrier, Jean-Damien; Hadfield, David S.; Hitchcock, Peter B.; Young, Douglas W.; Organic & biomolecular chemistry 2 (2004) 474–482; doi:10.1039/b314933a

data_7150344
_publ_section_title
;
 Synthesis of (2S,4S)- and (2S,4R)-5-fluoroleucine and
 (2S,4S)-[5,5-2H2]-5-fluoroleucine.
;
_journal_issue                   4
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              474
_journal_page_last               482
_journal_paper_doi               10.1039/b314933a
_journal_volume                  2
_journal_year                    2004
_chemical_formula_sum            'C23 H36 N2 O5'
_chemical_formula_weight         420.54
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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
_atom_sites_solution_secondary   difmap
_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                   9.005(2)
_cell_length_b                   16.541(5)
_cell_length_c                   16.841(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      10
_cell_measurement_theta_min      7
_cell_volume                     2508.5(11)
_computing_cell_refinement       'Enraf-Nonius CAD4'
_computing_data_collection       'Enraf-Nonius CAD4'
_computing_publication_material  SHELXL-93
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius CAD4'
_diffrn_measurement_method       \w--2\q
_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  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0976
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            6576
_diffrn_reflns_theta_full        27.97
_diffrn_reflns_theta_max         27.97
_diffrn_reflns_theta_min         2.42
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  120
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.114
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             912
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.136
_refine_diff_density_min         -0.151
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.5(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     279
_refine_ls_number_reflns         6028
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.982
_refine_ls_R_factor_all          0.1789
_refine_ls_R_factor_gt           0.0672
_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^)+(0.0565P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1267
_refine_ls_wR_factor_ref         0.1668
_reflns_number_gt                2531
_reflns_number_total             6028
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b314933a.txt
_cod_data_source_block           (19)-jan399
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7150344