A stereochemical journey around spirocyclic glutamic acid analogs
Chernykh, Anton V.; Chernykh, Alla V.; Radchenko, Dmytro S.; Chheda, Pratik Rajesh; Rusanov, Eduard B.; Grygorenko, Oleksandr O.; Spies, M. Ashley; Volochnyuk, Dmitriy M.; Komarov, Igor V.; Organic & Biomolecular Chemistry  (2022) –; doi:10.1039/D2OB00146B

data_7158603
_publ_section_title
;
 A stereochemical journey around spirocyclic glutamic acid analogs
;
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_paper_doi               10.1039/D2OB00146B
_journal_year                    2022
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H26 N2 O3 S'
_chemical_formula_sum            'C16 H26 N2 O3 S'
_chemical_formula_weight         326.45
_space_group_crystal_system      trigonal
_space_group_IT_number           144
_space_group_name_Hall           'P 31'
_space_group_name_H-M_alt        'P 31'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/4
_audit_update_record
;
2021-09-08 deposited with the CCDC.	2022-03-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   9.7014(14)
_cell_length_b                   9.7014(14)
_cell_length_c                   16.297(3)
_cell_measurement_reflns_used    1181
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      20.90
_cell_measurement_theta_min      2.42
_cell_volume                     1328.3(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-2016/4 (Sheldrick, 2016)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.903
_diffrn_measured_fraction_theta_max 0.904
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '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  0.0634
_diffrn_reflns_av_unetI/netI     0.1105
_diffrn_reflns_Laue_measured_fraction_full 0.903
_diffrn_reflns_Laue_measured_fraction_max 0.904
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8230
_diffrn_reflns_point_group_measured_fraction_full 0.878
_diffrn_reflns_point_group_measured_fraction_max 0.876
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.456
_diffrn_reflns_theta_min         2.424
_exptl_absorpt_coefficient_mu    0.196
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.61
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.224
_exptl_crystal_description       needle
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.170
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
 Flack x determined using 755 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.11(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.728
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         2879
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.728
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0394
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'w=1/[\s^2^(Fo^2^)] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0656
_refine_ls_wR_factor_ref         0.0708
_reflns_Friedel_coverage         0.937
_reflns_Friedel_fraction_full    0.853
_reflns_Friedel_fraction_max     0.848
_reflns_number_gt                2074
_reflns_number_total             2879
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ob00146b2.cif
_cod_data_source_block           xray37[54b]
_cod_database_code               7158603
_shelx_shelxl_version_number     2016/4
_shelx_estimated_absorpt_t_min   0.915
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              29444