Scalable Total Synthesis of (-)-Vinigrol.
Yu, Xuerong; Xiao, Lianghong; Wang, Zechun; Luo, Tuoping; Journal of the American Chemical Society 141 (2019) 3440–3443; doi:10.1021/jacs.9b00621

data_4127804
_publ_section_title
;
 Scalable Total Synthesis of (-)-Vinigrol.
;
_journal_issue                   8
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3440
_journal_page_last               3443
_journal_paper_doi               10.1021/jacs.9b00621
_journal_volume                  141
_journal_year                    2019
_chemical_absolute_configuration unk
_chemical_formula_sum            'C20 H34 O3'
_chemical_formula_weight         322.47
_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'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 112.309(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.8017(6)
_cell_length_b                   25.5888(14)
_cell_length_c                   8.8696(7)
_cell_measurement_reflns_used    9122
_cell_measurement_temperature    179.99(10)
_cell_measurement_theta_max      28.9910
_cell_measurement_theta_min      2.5950
_cell_volume                     1848.1(2)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      179.99(10)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'XtaLAB AFC12 (RINC): Kappa single'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1094
_diffrn_reflns_av_unetI/netI     0.0787
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            22547
_diffrn_reflns_point_group_measured_fraction_full 0.920
_diffrn_reflns_point_group_measured_fraction_max 0.900
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.483
_diffrn_reflns_theta_min         2.482
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.75857
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.29a (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.730
_refine_diff_density_min         -0.253
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details
;
 Flack x determined using 2236 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -1.2(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     439
_refine_ls_number_reflns         7645
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0864
_refine_ls_R_factor_gt           0.0730
_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^)+(0.0626P)^2^+2.1075P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1741
_refine_ls_wR_factor_ref         0.1854
_reflns_Friedel_coverage         0.762
_reflns_Friedel_fraction_full    0.836
_reflns_Friedel_fraction_max     0.797
_reflns_number_gt                6489
_reflns_number_total             7645
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b00621_si_002.cif
_cod_data_source_block           3
_cod_database_code               4127804
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              89750
_shelx_hkl_checksum              39511