Total Synthesis and Biological Evaluation of 19-Hydroxysarmentogenin-3 -O-α-l-rhamnoside, Trewianin, and Their Aglycons.
Urabe, Daisuke; Nakagawa, Yuki; Mukai, Ken; Fukushima, Kei-Ichiro; Aoki, Naoto; Itoh, Hiroaki; Nagatomo, Masanori; Inoue, Masayuki; The Journal of organic chemistry 83 (2018) 13888–13910; doi:10.1021/acs.joc.8b02219

data_4034874
_publ_section_title
;
 Total Synthesis and Biological Evaluation of 19-Hydroxysarmentogenin-3
 -O-\a-l-rhamnoside, Trewianin, and Their Aglycons.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              13888
_journal_page_last               13910
_journal_paper_doi               10.1021/acs.joc.8b02219
_journal_volume                  83
_journal_year                    2018
_chemical_formula_sum            'C26 H40 O5.25 Si'
_chemical_formula_weight         464.67
_space_group_IT_number           79
_space_group_name_Hall           'I 4'
_space_group_name_H-M_alt        'I 4'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_H-M   'I 4'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   28.813(2)
_cell_length_b                   28.813(2)
_cell_length_c                   6.1244(7)
_cell_measurement_reflns_used    2808
_cell_measurement_temperature    93
_cell_measurement_theta_max      20.12
_cell_measurement_theta_min      2.23
_cell_volume                     5084.4(8)
_computing_cell_refinement       'Bruker APEX2 (Bruker AXS, 2010)'
_computing_data_collection       'Bruker APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'Bruker SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'Brukre SHELXTL (Bruker AXS,2008)'
_computing_publication_material  'Bruker XCIF (Bruker AXS, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0561
_diffrn_reflns_av_sigmaI/netI    0.0624
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            7687
_diffrn_reflns_theta_full        19.76
_diffrn_reflns_theta_max         19.76
_diffrn_reflns_theta_min         2.24
_exptl_absorpt_coefficient_mu    0.127
_exptl_absorpt_correction_T_max  0.9962
_exptl_absorpt_correction_T_min  0.9727
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.513
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(4)
_refine_ls_extinction_coef       0.0013(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         2107
_refine_ls_number_restraints     409
_refine_ls_restrained_S_all      0.955
_refine_ls_R_factor_all          0.0699
_refine_ls_R_factor_gt           0.0584
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0838P)^2^+12.0463P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1425
_refine_ls_wR_factor_ref         0.1485
_reflns_number_gt                1837
_reflns_number_total             2107
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8b02219_si_002.cif
_cod_data_source_block           i4
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Tetragonal' was changed to
'tetragonal' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        5084.6(8)
_cod_original_sg_symbol_H-M      'I4   '
_cod_database_code               4034874