First total synthesis of asperilactone B. Revision of absolute stereochemistry of asperilactones B and C.
Djokić, Sanja; Benedeković, Goran; Kesić, Jelena; Rodić, Marko V; Popsavin, Mirjana; Popsavin, Velimir; Francuz, Jovana; Organic & biomolecular chemistry 22 (2024) 4864–4867; doi:10.1039/d4ob00583j

data_7159945
_publ_section_title
;
 First total synthesis of asperilactone B. Revision of absolute
 stereochemistry of asperilactones B and C.
;
_journal_issue                   24
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4864
_journal_page_last               4867
_journal_paper_doi               10.1039/d4ob00583j
_journal_volume                  22
_journal_year                    2024
_chemical_absolute_configuration rmad
_chemical_enantioexcess_bulk     1
_chemical_enantioexcess_bulk_technique OA
_chemical_formula_moiety         'C8 H14 O6'
_chemical_formula_sum            'C8 H14 O6'
_chemical_formula_weight         206.19
_chemical_melting_point          365
_chemical_name_common            '(-)-Asperilactone B monohydrate'
_chemical_name_systematic
' 3,6-Anhydro-2,8-dideoxy-L-glycero-L-ido-octono-1,4-lactone monohydrate'
_chemical_optical_rotation       '[\a]^25^~D~ = -41.4 (c = 0.5, Me~2~CO)'
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2024-02-19 deposited with the CCDC.	2024-05-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.846(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.5089(3)
_cell_length_b                   6.85830(11)
_cell_length_c                   8.93440(19)
_cell_measurement_reflns_used    4453
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      71.9350
_cell_measurement_theta_min      5.1170
_cell_volume                     977.81(3)
_computing_cell_refinement       'CrysAlisPro 1.171.41.109a (Rigaku OD, 2021)'
_computing_data_collection       'CrysAlisPro 1.171.41.109a (Rigaku OD, 2021)'
_computing_data_reduction        'CrysAlisPro 1.171.41.109a (Rigaku OD, 2021)'
_computing_molecular_graphics    'Mercury (Macrae et al., 2020)'
_computing_publication_material  'ShelXle (H\"ubschle et al., 2011)'
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.3280
_diffrn_detector_type            Sapphire3
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w     56.00 109.00   1.00    3.00    --   36.41-178.00  90.00   53
  2  \w      7.00 108.00   1.00    3.00    --   36.41  19.00  60.00  101
  3  \w    -31.00  53.00   1.00    3.00    --   36.41 -57.00 120.00   84
  4  \w      1.00  75.00   1.00    3.00    --   36.41 -99.00  90.00   74
  5  \w      1.00  75.00   1.00    3.00    --   36.41 -99.00 -90.00   74
  6  \w     61.00 109.00   1.00    3.00    --   36.41 178.00 -60.00   48
  7  \w      1.00  75.00   1.00    3.00    --   36.41 -99.00  60.00   74
  8  \w      7.00 108.00   1.00    3.00    --   36.41  19.00  90.00  101
  9  \w     91.00 176.00   1.00   12.00    --  108.00  45.00   0.00   85
 10  \w     90.00 175.00   1.00   12.00    --  108.00  61.00 -90.00   85
 11  \w     91.00 176.00   1.00   12.00    --  108.00  45.00 -30.00   85
 12  \w     90.00 175.00   1.00   12.00    --  108.00  61.00-180.00   85
 13  \w     70.00 178.00   1.00   12.00    --  108.00  15.00   0.00  108
 14  \w     41.00 126.00   1.00   12.00    --  108.00 -61.00-180.00   85
 15  \w     90.00 175.00   1.00   12.00    --  108.00  61.00 -30.00   85
 16  \w     39.00 106.00   1.00   12.00    --  108.00 -94.00 -60.00   67
 17  \w     39.00 106.00   1.00   12.00    --  108.00 -94.00 150.00   67
 18  \w     41.00 126.00   1.00   12.00    --  108.00 -61.00  60.00   85
 19  \w    104.00 178.00   1.00   12.00    --  108.00 111.00  90.00   74
 20  \w     38.00 109.00   1.00   12.00    --  108.00-111.00 120.00   71
 21  \w     91.00 176.00   1.00   12.00    --  108.00  45.00-120.00   85
 22  \w     90.00 175.00   1.00   12.00    --  108.00  61.00 -60.00   85
 23  \w     91.00 176.00   1.00   12.00    --  108.00  45.00 -60.00   85
 24  \w     38.00 109.00   1.00   12.00    --  108.00-111.00  90.00   71
 25  \w     38.00 129.00   1.00   12.00    --  108.00 -30.00  60.00   91
 26  \w     20.00  86.00   1.00    3.00    --   36.41  57.00-180.00   66
 27  \f   -180.00  90.00   1.00    0.50   0.00   0.00   0.00    --   270
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Gemini S (Oxford Diffraction)'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0616949000
_diffrn_orient_matrix_UB_12      -0.1725383000
_diffrn_orient_matrix_UB_13      -0.0223296000
_diffrn_orient_matrix_UB_21      -0.0391155000
_diffrn_orient_matrix_UB_22      0.0655711000
_diffrn_orient_matrix_UB_23      -0.1679353000
_diffrn_orient_matrix_UB_31      0.0630985000
_diffrn_orient_matrix_UB_32      -0.1280606000
_diffrn_orient_matrix_UB_33      -0.0559191000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0286
_diffrn_reflns_av_unetI/netI     0.0253
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4973
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.974
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         71.851
_diffrn_reflns_theta_min         5.121
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.044
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.69819
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro 1.171.41.109a (Rigaku Oxford Diffraction, 2021) 
Empirical absorption correction using spherical harmonics, 
implemented in SCALE3 ABSPACK scaling algorithm. 
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.401
_exptl_crystal_description       irregular
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.770
_exptl_crystal_size_mid          0.403
_exptl_crystal_size_min          0.116
_refine_diff_density_max         0.178
_refine_diff_density_min         -0.143
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details
; 
 Flack x determined using 812 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.01(8)
_refine_ls_extinction_coef       0.0157(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/2 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     142
_refine_ls_number_reflns         1874
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0365
_refine_ls_R_factor_gt           0.0348
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0521P)^2^+0.2791P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0902
_refine_ls_wR_factor_ref         0.0919
_reflns_Friedel_coverage         0.807
_reflns_Friedel_fraction_full    0.984
_reflns_Friedel_fraction_max     0.953
_reflns_number_gt                1847
_reflns_number_total             1874
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ob00583j3.cif
_cod_data_source_block           ent-I
_cod_depositor_comments
'Adding full bibliography for 7159944--7159948.cif.'
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               7159945
_shelx_shelxl_version_number     2019/3
_shelx_res_checksum              53433