Asymmetric synthesis and cytotoxic activity of isomeric phytosphingosine derivatives.
Rives, Arnaud; Baudoin-Dehoux, Cécile; Saffon, Nathalie; Andrieu-Abadie, Nathalie; Génisson, Yves; Organic & biomolecular chemistry 9 (2011) 8163–8170; doi:10.1039/c1ob06195j

data_7152087
_publ_section_title
;
 Asymmetric synthesis and cytotoxic activity of isomeric phytosphingosine
 derivatives.
;
_journal_issue                   23
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              8163
_journal_page_last               8170
_journal_paper_doi               10.1039/c1ob06195j
_journal_volume                  9
_journal_year                    2011
_chemical_absolute_configuration syn
_chemical_formula_sum            'C25 H45 N O3'
_chemical_formula_weight         407.62
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.668(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.2997(5)
_cell_length_b                   4.9870(3)
_cell_length_c                   24.6551(13)
_cell_measurement_reflns_used    4599
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      29.99
_cell_measurement_theta_min      2.48
_cell_volume                     1265.03(12)
_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-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0388
_diffrn_reflns_av_sigmaI/netI    0.0453
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            17243
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         5.13
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.729977
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker-AXS)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.070
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.170
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881, 2240 Friedel pairs'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         5095
_refine_ls_number_restraints     169
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0831
_refine_ls_R_factor_gt           0.0545
_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^)+(0.0552P)^2^+0.6562P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1405
_refine_ls_wR_factor_ref         0.1557
_reflns_number_gt                3682
_reflns_number_total             5095
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ob06195j.txt
_cod_data_source_block           9
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7152087