Bioactive Nortriterpenoids from Schisandra grandiflora.
Xiao, Wei-Lie; Gong, Yan-Qing; Wang, Rui-Rui; Weng, Zhi-Ying; Luo, Xiao; Li, Xiao-Nian; Yang, Guang-Yu; He, Fei; Pu, Jian-Xin; Yang, Liu-Meng; Zheng, Yong-Tang; Lu, Yang; Sun, Han-Dong; Journal of natural products 72 (2009) 1678–1681; doi:10.1021/np900292e

data_1503702
_publ_section_title
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 Bioactive Nortriterpenoids from Schisandra grandiflora.
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_journal_issue                   9
_journal_name_full               'Journal of natural products'
_journal_page_first              1678
_journal_page_last               1681
_journal_paper_doi               10.1021/np900292e
_journal_volume                  72
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C29 H36 O11'
_chemical_formula_sum            'C29 H36 O11'
_chemical_formula_weight         560.58
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   10.825(1)
_cell_length_b                   11.335(1)
_cell_length_c                   22.723(2)
_cell_measurement_reflns_used    2875
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.45
_cell_measurement_theta_min      2.60
_cell_volume                     2788.1(4)
_computing_cell_refinement       'SCALE(Otwinowski & Minor,1996)'
_computing_data_collection       'DENZO(Otwinowski & Minor,1996)'
_computing_data_reduction        'SCALE(Otwinowski & Minor,1996)'
_computing_molecular_graphics    'ORTEPII(Johnson,1976) and PLUTON(Spek,1990)'
_computing_publication_material  'SHELXL97(Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0193
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2875
_diffrn_reflns_theta_full        25.45
_diffrn_reflns_theta_max         25.45
_diffrn_reflns_theta_min         2.60
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.159
_refine_diff_density_min         -0.147
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     362
_refine_ls_number_reflns         2875
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0428
_refine_ls_R_factor_gt           0.0394
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0673P)^2^+0.3308P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1010
_refine_ls_wR_factor_ref         0.1041
_reflns_number_gt                2665
_reflns_number_total             2875
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np900292e_si_003.cif
_cod_data_source_block           4865
_cod_database_code               1503702