Experimental and Theoretical Studies on Stereo- and Regioselectivity in Intramolecular Nitrone-Alkene Cycloaddition of Hept-6-enoses Derived from Carbohydrates
Tony K. M. Shing; Annie W. F. Wong; Taketo Ikeno; Tohru Yamada; Journal of Organic Chemistry 71 (2006) 3253–3263; doi:10.1021/jo060348y

data_4021649
_publ_section_title
;
 Experimental and Theoretical Studies on Stereo- and Regioselectivity
 in Intramolecular Nitrone-Alkene Cycloaddition of
 Hept-6-enoses Derived from Carbohydrates
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              3253
_journal_page_last               3263
_journal_paper_doi               10.1021/jo060348y
_journal_volume                  71
_journal_year                    2006
_chemical_formula_sum            'C14 H25 N O6'
_chemical_formula_weight         303.35
_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            8
_cell_length_a                   9.2158(4)
_cell_length_b                   9.2268(4)
_cell_length_c                   36.4990(16)
_cell_measurement_temperature    293(2)
_cell_volume                     3103.6(2)
_computing_cell_refinement       'BRUKER SMART CCD DIFFRACTOMETER'
_computing_data_collection       'BRUKER SMART CCD DIFFRACTOMETER'
_computing_data_reduction        'BRUKER SMART CCD DIFFRACTOMETER'
_computing_molecular_graphics    'SIEMENS SHELXTL'
_computing_publication_material  'SIEMENS SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'BRUKER SMART CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA SCAN'
_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  0.0376
_diffrn_reflns_av_sigmaI/netI    0.0399
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       47
_diffrn_reflns_limit_l_min       -48
_diffrn_reflns_number            21153
_diffrn_reflns_theta_full        28.03
_diffrn_reflns_theta_max         28.03
_diffrn_reflns_theta_min         1.12
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.590879
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.298
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.264
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1.3(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.112
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     379
_refine_ls_number_reflns         7461
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.112
_refine_ls_R_factor_all          0.0790
_refine_ls_R_factor_gt           0.0576
_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^)+(0.0718P)^2^+0.4624P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1317
_refine_ls_wR_factor_ref         0.1441
_reflns_number_gt                5830
_reflns_number_total             7461
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo060348ysi20060220_032641.cif
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'ORTHORHOMBIC' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_database_code               4021649