Diastereoselective C-C Bond Formation at C-5 of Vinyl Sulfone-Modified Hex-5-enofuranosyl Carbohydrates: Diversity-Oriented Synthesis of Branched-Chain Sugars and Beyond
Indrajit Das; Tarun K. Pal; Cheravakkattu G. Suresh; Tanmaya Pathak; Journal of Organic Chemistry 72 (2007) 5523–5533; doi:10.1021/jo062373+

data_4024045
_publ_contact_author_address
'Department of Chemistry, IIT, Kharagpur 721 302, India'
_publ_contact_author_email       tpathak@chem.iitkgp.ernet.in
_publ_contact_author_name        'Tanmaya Pathak'
_publ_section_title
;
 Diastereoselective C-C Bond Formation at C-5 of Vinyl Sulfone-Modified
 Hex-5-enofuranosyl Carbohydrates: Diversity-Oriented Synthesis of
 Branched-Chain Sugars and Beyond
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5523
_journal_page_last               5533
_journal_paper_doi               10.1021/jo062373+
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C22 H26 O11 S'
_chemical_formula_sum            'C22 H26 O11 S'
_chemical_formula_weight         498.51
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                101.34
_cell_angle_beta                 93.88
_cell_angle_gamma                90.82
_cell_formula_units_Z            2
_cell_length_a                   9.341
_cell_length_b                   10.700
_cell_length_c                   12.856
_cell_measurement_reflns_used    4711
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.97
_cell_measurement_theta_min      1.62
_cell_volume                     1256.5
_computing_cell_refinement       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_collection       'CAD4 Express (Enraf Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXL-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  CAD4
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0558
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4711
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         1.62
_diffrn_standards_interval_time  '60 sec'
_diffrn_standards_number         25
_exptl_absorpt_coefficient_mu    0.184
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             524
_exptl_crystal_size_max          0.03
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.214
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(11)
_refine_ls_extinction_coef       0.0061(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     614
_refine_ls_number_reflns         4711
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.1079
_refine_ls_R_factor_gt           0.0505
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0717P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1131
_refine_ls_wR_factor_ref         0.1329
_reflns_number_gt                3141
_reflns_number_total             4711
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo062373+si20061117_031831.cif
_cod_data_source_block           ptid6
_cod_database_code               4024045