Enantioselective and Protecting Group-Free Synthesis of 1-Deoxythionojirimycin, 1-Deoxythiomannojirimycin, and 1-Deoxythiotalonojirimycin
Thanikachalam Gunasundari; Srinivasan Chandrasekaran; Journal of Organic Chemistry 75 (2010) 6685–6688; doi:10.1021/jo1010125

data_4025693
_publ_contact_author_address
; 
 Department of Organic Chemistry
 Indian Institute of Science
 Bangalore, 560 012
 India
;
_publ_contact_author_email       scn@orgchem.iisc.ernet.in
_publ_contact_author_fax         '(91) 80 23602423'
_publ_contact_author_name
; 
 'Prof.S.Chandrasekaran'
;
_publ_contact_author_phone       '(91) 80 22932404'
_publ_section_title
;
 Enantioselective and Protecting Group-Free Synthesis of
 1-Deoxythionojirimycin, 1-Deoxythiomannojirimycin, and
 1-Deoxythiotalonojirimycin
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6685
_journal_page_last               6688
_journal_paper_doi               10.1021/jo1010125
_journal_volume                  75
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C6 H8 O4 S'
_chemical_formula_sum            'C6 H8 O4 S'
_chemical_formula_weight         176.18
_chemical_name_systematic
;
1-deoxy-5-thio-D-talopyrano-3,6-lactone
;
_space_group_IT_number           76
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      76
_symmetry_space_group_name_Hall  'P 4w'
_symmetry_space_group_name_H-M   'P 41'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             'Apr 13 23:46:29 2010'
_audit_creation_method           'PLATON <TABLE ACC> option'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.160(3)
_cell_length_b                   11.160(3)
_cell_length_c                   5.904(3)
_cell_measurement_reflns_used    3445
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.98
_cell_measurement_theta_min      2.58
_cell_volume                     735.3(5)
_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  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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     0.71073
_diffrn_reflns_av_R_equivalents  0.0212
_diffrn_reflns_av_sigmaI/netI    0.0192
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5584
_diffrn_reflns_reduction_process
;
 ?
;
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    0.400
_exptl_absorpt_correction_T_max  0.9306
_exptl_absorpt_correction_T_min  0.9019
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX 2 (Bruker)'
_exptl_crystal_colour            ' colorless'
_exptl_crystal_density_diffrn    1.591
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       ' block'
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.194
_refine_diff_density_min         -0.116
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H.D. (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(8)
_refine_ls_extinction_method     ' none'
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     102
_refine_ls_number_reflns         1438
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.131
_refine_ls_R_factor_all          0.0293
_refine_ls_R_factor_gt           0.0285
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1536P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0720
_reflns_number_gt                1401
_reflns_number_total             1438
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo1010125_si_004.cif
_cod_data_source_block           tgsc239_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_hydrogens' value ' geom' changed
to 'geom' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_primary' value ' direct' changed
to 'direct' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_secondary' value ' difmap' changed
to 'difmap' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value ' mixed' changed
to 'mixed' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_weighting_scheme' value ' calc' changed to
'calc' according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4025693