Enantioselective synthesis of α-benzylated lanthionines and related tripeptides for biological incorporation into E. coli peptidoglycan.
Denoël, Thibaut; Zervosen, Astrid; Lemaire, Christian; Joris, Bernard; Hervé, Mireille; Blanot, Didier; Zaragoza, Guillermo; Luxen, André; Organic & biomolecular chemistry 12 (2014) 9853–9863; doi:10.1039/c4ob01476f

data_7154190
_publ_section_title
;
 Enantioselective synthesis of \a-benzylated lanthionines and related
 tripeptides for biological incorporation into E. coli peptidoglycan.
;
_journal_issue                   48
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              9853
_journal_page_last               9863
_journal_paper_doi               10.1039/c4ob01476f
_journal_volume                  12
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C14 H18 N4 O5 S1'
_chemical_formula_sum            'C14 H18 N4 O5 S'
_chemical_formula_weight         354.38
_chemical_name_systematic
;
 ?
;
_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   mixed
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.7297(3)
_cell_length_b                   16.2240(9)
_cell_length_c                   17.5243(9)
_cell_measurement_reflns_used    1996
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.68
_cell_measurement_theta_min      2.64
_cell_measurement_wavelength     0.71073
_cell_volume                     1629.04(15)
_computing_cell_refinement       'APPEX2 (BRUKER AXS, 2005)'
_computing_data_collection       'APPEX2 (BRUKER AXS, 2005)'
_computing_data_reduction        'APPEX2 (BRUKER AXS, 2005)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-2012 (Sheldrick, 2012)'
_computing_structure_solution    'SIR97 (Giacovazzo et al, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'BRUKER APPEX-II CCD'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0524
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8190
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.462
_diffrn_reflns_theta_min         2.324
_exptl_absorpt_coefficient_mu    0.232
_exptl_absorpt_correction_T_max  0.9705
_exptl_absorpt_correction_T_min  0.8083
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.445
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.251
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.059
_refine_ls_abs_structure_details
;
 Flack x determined using 830 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.10(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.854
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     223
_refine_ls_number_reflns         3347
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      0.854
_refine_ls_R_factor_all          0.0762
_refine_ls_R_factor_gt           0.0465
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0656P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0949
_refine_ls_wR_factor_ref         0.1098
_reflns_number_gt                2496
_reflns_number_total             3347
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4ob01476f4.cif
_cod_data_source_block           R35
_cod_depositor_comments
'Adding full bibliography for 7154189--7154190.cif.'
_cod_database_code               7154190