(±)-Usphenethylones A-C, three pairs of heterodimeric polyketide enantiomers from <i>Aspergillus ustus</i> 3.3904.
Peng, Xiaogang; Zhou, Shuang; Liu, Junjun; Gao, Ying; Chang, Jinling; Ruan, Hanli; Organic & biomolecular chemistry 20 (2022) 694–700; doi:10.1039/d1ob02006d

data_7158462
_publ_section_title
;
 (+-)-Usphenethylones A-C, three pairs of heterodimeric polyketide
 enantiomers from <i>Aspergillus ustus</i> 3.3904.
;
_journal_issue                   3
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              694
_journal_page_last               700
_journal_paper_doi               10.1039/d1ob02006d
_journal_volume                  20
_journal_year                    2022
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H24 O6'
_chemical_formula_sum            'C20 H24 O6'
_chemical_formula_weight         360.39
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-05-06
_audit_creation_method
; 
Olex2 1.3 
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272) 
;
_audit_update_record
;
2021-08-20 deposited with the CCDC.	2021-12-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.418(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.5427(4)
_cell_length_b                   15.2194(8)
_cell_length_c                   14.1219(7)
_cell_measurement_reflns_used    9938
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      57.07
_cell_measurement_theta_min      3.72
_cell_volume                     1835.49(16)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'XM  (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34138
_diffrn_reflns_av_R_equivalents  0.0400
_diffrn_reflns_av_unetI/netI     0.0273
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            43116
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.980
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         57.066
_diffrn_reflns_theta_min         2.723
_diffrn_source_current           3.57
_diffrn_source_power             0.2497215
_diffrn_source_voltage           69.95
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.505
_exptl_absorpt_correction_T_max  0.7512
_exptl_absorpt_correction_T_min  0.6663
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2016/2 (Bruker,2016/2)'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.304
_exptl_crystal_description       block
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.226
_refine_diff_density_min         -0.261
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details
; 
 Flack x determined using 3044 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.10(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.094
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     479
_refine_ls_number_reflns         7371
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.094
_refine_ls_R_factor_all          0.0392
_refine_ls_R_factor_gt           0.0351
_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^)+(0.0583P)^2^+0.2432P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0896
_refine_ls_wR_factor_ref         0.0970
_reflns_Friedel_coverage         0.894
_reflns_Friedel_fraction_full    0.960
_reflns_Friedel_fraction_max     0.963
_reflns_number_gt                6911
_reflns_number_total             7371
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ob02006d2.cif
_cod_data_source_block           210429c_0m
_cod_depositor_comments
'Adding full bibliography for 7158459--7158466.cif.'
_cod_database_code               7158462
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.951
_shelx_estimated_absorpt_t_min   0.942
_olex2_refinement_description
; 
1. Fixed Uiso 
 At 1.2 times of: 
  All C(H) groups, All C(H,H) groups 
 At 1.5 times of: 
  All C(H,H,H) groups 
2.a Ternary CH refined with riding coordinates: 
 C7(H7), C7A(H7A) 
2.b Secondary CH2 refined with riding coordinates: 
 C8(H8A,H8B), C9(H9A,H9B), C16(H16A,H16B), C8A(H8AA,H8AB), C9A(H9AA,H9AB), 
 C16A(H16C,H16D) 
2.c Aromatic/amide H refined with riding coordinates: 
 C3(H3), C6(H6), C3A(H3A), C6A(H6A) 
2.d Idealised Me refined as rotating group: 
 C1'(H1'A,H1'B,H1'C), C2'(H2'A,H2'B,H2'C), C3'(H3'A,H3'B,H3'C), C15(H15A,H15B, 
 H15C), C17(H17A,H17B,H17C), C1A'(H1AA,H1AB,H1AC), C2A'(H2AA,H2AB,H2AC), 
 C3A'(H3AA,H3AB,H3AC), C15A(H15D,H15E,H15F), C17A(H17D,H17E,H17F) 
;
_shelx_res_checksum              57033
_olex2_submission_special_instructions 'No special instructions were received'