Bioinspired synthesis and biological evaluation of <i>ent</i>-protulactones A and B.
Liang, Changxu; Hu, Chao; Nie, Pengpeng; Liu, Yuanfang; Liu, Jun; Du, Yuguo; Organic & biomolecular chemistry 22 (2023) 175–183; doi:10.1039/d3ob01708g

data_7159702
_publ_section_title
;
 Bioinspired synthesis and biological evaluation of
 <i>ent</i>-protulactones A and B.
;
_journal_issue                   1
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              175
_journal_page_last               183
_journal_paper_doi               10.1039/d3ob01708g
_journal_volume                  22
_journal_year                    2023
_chemical_absolute_configuration unk
_chemical_formula_sum            'C17 H20 O6'
_chemical_formula_weight         320.33
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2023-04-25 deposited with the CCDC.	2023-11-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.1304(2)
_cell_length_b                   10.9898(3)
_cell_length_c                   20.5390(5)
_cell_measurement_reflns_used    12122
_cell_measurement_temperature    180.00(10)
_cell_measurement_theta_max      30.7420
_cell_measurement_theta_min      1.9760
_cell_volume                     1609.47(7)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      180.00(10)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.919
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy R, DW system, HyPix'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_unetI/netI     0.0267
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.919
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            19468
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.879
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.671
_diffrn_reflns_theta_min         2.102
_diffrn_source                   'Rotating-anode X-ray tube'
_diffrn_source_type              'Rigaku (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.93218
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.42.72a (Rigaku Oxford Diffraction, 2022)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_description       block
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.213
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details
;
 Flack x determined using 1443 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.9(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         4382
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0368
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0606P)^2^+0.0345P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0948
_refine_ls_wR_factor_ref         0.0981
_reflns_Friedel_coverage         0.676
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.825
_reflns_number_gt                3868
_reflns_number_total             4382
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ob01708g2.cif
_cod_data_source_block           3
_cod_depositor_comments          'Adding full bibliography for 7159702.cif.'
_cod_database_code               7159702
_shelx_shelxl_version_number     2014/7
_oxdiff_exptl_absorpt_empirical_full_min 0.946
_oxdiff_exptl_absorpt_empirical_full_max 1.073
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              97253