Total synthesis of the purported structure of sclerophytin f.
Clark, J. Stephen; Delion, Laetitia; Farrugia, Louis J.; Organic letters 16 (2014) 4300–4303; doi:10.1021/ol5020152

data_1517229
_publ_section_title
;
 Total synthesis of the purported structure of sclerophytin f.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4300
_journal_page_last               4303
_journal_paper_doi               10.1021/ol5020152
_journal_volume                  16
_journal_year                    2014
_chemical_absolute_configuration rm
_chemical_compound_source        'as described'
_chemical_formula_moiety         'C20 H32 O3'
_chemical_formula_sum            'C20 H32 O3'
_chemical_formula_weight         320.45
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           154
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      154
_symmetry_space_group_name_Hall  'P 32 2"'
_symmetry_space_group_name_H-M   'P 32 2 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   direct
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2014-03-27T15:45:19-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   17.4587(6)
_cell_length_b                   17.4587(6)
_cell_length_c                   10.7319(4)
_cell_measurement_reflns_used    9901
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.44
_cell_measurement_theta_min      2.33
_cell_measurement_wavelength     0.71073
_cell_volume                     2832.90(17)
_computing_cell_refinement       'SAINT V8.27B integration software'
_computing_data_collection       'Bruker APEX2 software'
_computing_data_reduction        'SORTAV (Blessing, 1995)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2008)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector                 'APEX-II CCD'
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II'
_diffrn_measurement_method       '\f or \w oscillation scans'
_diffrn_orient_matrix_UB_11      -0.055962
_diffrn_orient_matrix_UB_12      0.001494
_diffrn_orient_matrix_UB_13      0.012935
_diffrn_orient_matrix_UB_21      0.033665
_diffrn_orient_matrix_UB_22      0.065944
_diffrn_orient_matrix_UB_23      -0.007066
_diffrn_orient_matrix_UB_31      -0.010453
_diffrn_orient_matrix_UB_32      -0.004855
_diffrn_orient_matrix_UB_33      -0.092007
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.091
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 1
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            74902
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 1
_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        25.242
_diffrn_reflns_theta_max         25.958
_diffrn_reflns_theta_min         1.347
_diffrn_source                   'sealed x-ray tube'
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_correction_T_min  0.638
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2012/1 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.127
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.223
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details
;
 Flack x determined using 1090 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.2(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     212
_refine_ls_number_reflns         3714
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0764
_refine_ls_R_factor_gt           0.0509
_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^)+(0.0383P)^2^+0.6609P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1122
_refine_ls_wR_factor_ref         0.1192
_reflns_number_gt                2784
_reflns_number_total             3714
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5020152_si_003.cif
_cod_data_source_block           shelx
_cod_depositor_comments
'Adding full bibliography for 1517229--1517231.cif.'
_cod_original_cell_volume        2832.9(2)
_cod_database_code               1517229
_shelx_estimated_absorpt_t_min   0.957
_shelx_estimated_absorpt_t_max   0.993
_shelx_res_checksum              32645
_shelx_hkl_checksum              38715