Structural Characterization and Antioxidative Activity of Lancifonins: Unique Nortriterpenoids from Schisandra lancifolia.
Shi, Yi-Ming; Yang, Jie; Xu, Li; Li, Xiao-Nian; Shang, Shan-Zhai; Cao, Peng; Xiao, Wei-Lie; Sun, Han-Dong; Organic letters 16 (2014) 1370–1373; doi:10.1021/ol5001186

data_1513823
_publ_section_title
;
 Structural Characterization and Antioxidative Activity of Lancifonins:
 Unique Nortriterpenoids from Schisandra lancifolia.
;
_journal_issue                   5
_journal_name_full               'Organic letters'
_journal_page_first              1370
_journal_page_last               1373
_journal_paper_doi               10.1021/ol5001186
_journal_volume                  16
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C29 H34 O11'
_chemical_formula_sum            'C29 H34 O11'
_chemical_formula_weight         558.56
_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                   11.6577(2)
_cell_length_b                   12.3190(2)
_cell_length_c                   18.3198(3)
_cell_measurement_reflns_used    9926
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.05
_cell_measurement_theta_min      3.79
_cell_volume                     2630.93(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.944
_diffrn_measured_fraction_theta_max 0.944
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0270
_diffrn_reflns_av_sigmaI/netI    0.0300
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            12013
_diffrn_reflns_theta_full        69.43
_diffrn_reflns_theta_max         69.43
_diffrn_reflns_theta_min         4.32
_exptl_absorpt_coefficient_mu    0.908
_exptl_absorpt_correction_T_max  0.6595
_exptl_absorpt_correction_T_min  0.6118
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.50
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.11(11)
_refine_ls_extinction_coef       0.0127(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   1.117
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     369
_refine_ls_number_reflns         4445
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.0278
_refine_ls_R_factor_gt           0.0277
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0273P)^2^+0.7459P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0688
_refine_ls_wR_factor_ref         0.0689
_reflns_number_gt                4441
_reflns_number_total             4445
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol5001186_si_002.cif
_cod_data_source_block           cu_ssl39a_0m
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
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_cod_database_code               1513823