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_4127803
_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 ad
_chemical_formula_sum            'C21 H34 O4'
_chemical_formula_weight         350.48
_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                 103.4566(15)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.82878(14)
_cell_length_b                   8.60788(12)
_cell_length_c                   13.17393(18)
_cell_measurement_reflns_used    3582
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      67.7810
_cell_measurement_theta_min      6.8370
_cell_volume                     973.69(3)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB AFC11 (RCD3): quarter-chi single'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0287
_diffrn_reflns_av_unetI/netI     0.0298
_diffrn_reflns_Laue_measured_fraction_full 0.974
_diffrn_reflns_Laue_measured_fraction_max 0.969
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4254
_diffrn_reflns_point_group_measured_fraction_full 0.803
_diffrn_reflns_point_group_measured_fraction_max 0.798
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         68.093
_diffrn_reflns_theta_min         6.843
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.642
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.43041
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.28b (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_description       block
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.202
_refine_diff_density_rms         0.042
_refine_ls_abs_structure_details
;
 Flack x determined using 940 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.16(13)
_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     239
_refine_ls_number_reflns         2840
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0400
_refine_ls_R_factor_gt           0.0383
_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^)+(0.0640P)^2^+0.2180P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1013
_refine_ls_wR_factor_ref         0.1033
_reflns_Friedel_coverage         0.537
_reflns_Friedel_fraction_full    0.606
_reflns_Friedel_fraction_max     0.600
_reflns_number_gt                2771
_reflns_number_total             2840
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b00621_si_008.cif
_cod_data_source_block           S11
_cod_database_code               4127803
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              64665
_shelx_hkl_checksum              80765