The cubane paradigm in bioactive molecule discovery: further scope, limitations and the cyclooctatetraene complement.
Houston, Sevan D.; Fahrenhorst-Jones, Tyler; Xing, Hui; Chalmers, Benjamin A.; Sykes, Melissa L.; Stok, Jeanette E.; Farfan Soto, Clementina; Burns, Jed M.; Bernhardt, Paul V.; De Voss, James J.; Boyle, Glen M.; Smith, Maree T.; Tsanaktsidis, John; Savage, G. Paul; Avery, Vicky M.; Williams, Craig M.; Organic & biomolecular chemistry 17 (2019) 6790–6798; doi:10.1039/c9ob01238a

data_7156940
_publ_section_title
;
 The cubane paradigm in bioactive molecule discovery: further scope,
 limitations and the cyclooctatetraene complement.
;
_journal_issue                   28
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6790
_journal_page_last               6798
_journal_paper_doi               10.1039/c9ob01238a
_journal_volume                  17
_journal_year                    2019
_chemical_absolute_configuration unk
_chemical_formula_sum            'C24 H27 N O3'
_chemical_formula_weight         377.46
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.5
_audit_creation_date             2019-03-28T16:32:39-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2019-03-28 deposited with the CCDC.    2019-06-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7132(3)
_cell_length_b                   14.1931(5)
_cell_length_c                   14.3361(5)
_cell_measurement_reflns_used    2601
_cell_measurement_temperature    190(2)
_cell_measurement_theta_max      61.5
_cell_measurement_theta_min      5.45
_cell_measurement_wavelength     1.54184
_cell_volume                     1976.38(12)
_computing_cell_refinement       'CrysalisPro (Agilent Technologies,     )'
_computing_data_collection       'CrysalisPro (Agilent Technologies,     )'
_computing_data_reduction        'CrysalisPro (Agilent Technologies,     )'
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_diffrn_ambient_temperature      190(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.02
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type
'Agilent Technologies Xcalibur, EosS2, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_UB_11      0.019963
_diffrn_orient_matrix_UB_12      -0.045014
_diffrn_orient_matrix_UB_13      -0.096886
_diffrn_orient_matrix_UB_21      -0.105787
_diffrn_orient_matrix_UB_22      -0.076768
_diffrn_orient_matrix_UB_23      0.024929
_diffrn_orient_matrix_UB_31      -0.116421
_diffrn_orient_matrix_UB_32      0.062084
_diffrn_orient_matrix_UB_33      -0.0394
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0325
_diffrn_reflns_av_unetI/netI     0.042
_diffrn_reflns_Laue_measured_fraction_full 0.99
_diffrn_reflns_Laue_measured_fraction_max 0.99
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5200
_diffrn_reflns_point_group_measured_fraction_full 0.864
_diffrn_reflns_point_group_measured_fraction_max 0.864
_diffrn_reflns_reduction_process
;
 Scaled and merged with Sortav
 R.H. Blessing, (1987) Cryst. Rev. 1, 3-58
 R.H. Blessing, (1989) J. Appl. Cryst. 22, 396-397
;
_diffrn_reflns_theta_full        61.573
_diffrn_reflns_theta_max         61.573
_diffrn_reflns_theta_min         4.384
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.66
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.707
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
        Empirical absorption correction using spherical harmonics,
        implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.138
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.04
_refine_ls_abs_structure_details
;
 Flack x determined using 807 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     258
_refine_ls_number_reflns         2655
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0415
_refine_ls_R_factor_gt           0.0391
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0513P)^2^+0.1414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0962
_refine_ls_wR_factor_ref         0.0983
_reflns_Friedel_coverage         0.513
_reflns_Friedel_fraction_full    0.691
_reflns_Friedel_fraction_max     0.691
_reflns_number_gt                2524
_reflns_number_total             2655
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01238a2.cif
_cod_data_source_block           shelx_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7156939--7156942.cif.'
_cod_database_code               7156940
_shelx_shelxl_version_number     2018/1