Synthesis of 4-Selenothreofuranose Derivatives via Pummerer-Type Reactions of trans-3,4-Dioxygenated Tetrahydroselenophenes Mediated by a Selenonium Intermediate
Iwaoka, Michio; Hiyoshi, Yuta; Arai, Shota; Ito, Takeru; ACS Omega  (2021) –; doi:10.1021/acsomega.1c02160

data_4518847
_publ_section_title
;
 Synthesis of 4-Selenothreofuranose Derivatives via Pummerer-Type
 Reactions of trans-3,4-Dioxygenated Tetrahydroselenophenes Mediated by a
 Selenonium Intermediate
;
_journal_name_full               'ACS Omega'
_journal_paper_doi               10.1021/acsomega.1c02160
_journal_year                    2021
_chemical_formula_moiety         'C10 H15 N O5 Se'
_chemical_formula_sum            'C10 H15 N O5 Se'
_chemical_formula_weight         308.19
_chemical_name_common            10a
_chemical_name_systematic
'(3R,4R/3S,4S)-2-Acetamidotetrahydroselenophene-3,4-diyl diacetate'
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_update_record
;
2020-11-24 deposited with the CCDC.	2021-04-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   8.5156(4)
_cell_length_b                   14.6400(4)
_cell_length_c                   20.2074(5)
_cell_measurement_reflns_used    3465
_cell_measurement_temperature    100
_cell_measurement_theta_max      73.82
_cell_measurement_theta_min      6.39
_cell_volume                     2519.22(15)
_computing_cell_refinement       'CrysAlisPro 1.171.39.20a (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.39.20a (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.39.20a (Rigaku OD, 2015)'
_computing_molecular_graphics    'CrystalStructure 4.3'
_computing_publication_material  'CrystalStructure 4.3 (Rigaku, 2019)'
_computing_structure_refinement  'SHELXL Version 2018/3 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT Version 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 5.811
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0481
_diffrn_reflns_av_unetI/netI     0.0680
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.968
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9491
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.968
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         74.638
_diffrn_reflns_theta_min         4.376
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.159
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.387
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.20a (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.625
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1248.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.020
_refine_diff_density_max         1.73
_refine_diff_density_min         -0.98
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.106
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     192
_refine_ls_number_reflns         2501
_refine_ls_number_restraints     4
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0671
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0521P)^2^+13.5438P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1695
_refine_ls_wR_factor_ref         0.1775
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2201
_reflns_number_total             2501
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            2046026.cif
_cod_data_source_block           xcalibur
_cod_database_code               4518847
_shelx_res_checksum              28392
_shelx_hkl_checksum              72306