Tirucallane-type triterpenoids from Dysoxylum lenticellatum.
Huang, Hong-Li; Wang, Chun-Ming; Wang, Zhen-Hua; Yao, Ming-Jun; Han, Guang-Tian; Yuan, Ji-Cheng; Gao, Kun; Yuan, Cheng-Shan; Journal of natural products 74 (2011) 2235–2242; doi:10.1021/np2006296

data_1501846
_publ_section_title
;
 Tirucallane-type triterpenoids from Dysoxylum lenticellatum.
;
_journal_issue                   10
_journal_name_full               'Journal of natural products'
_journal_page_first              2235
_journal_page_last               2242
_journal_paper_doi               10.1021/np2006296
_journal_volume                  74
_journal_year                    2011
_chemical_absolute_configuration none
_chemical_formula_sum            'C32 H52 O4'
_chemical_formula_weight         500.74
_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                   7.541(8)
_cell_length_b                   10.852(11)
_cell_length_c                   36.43(4)
_cell_measurement_reflns_used    3047
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      19.20
_cell_measurement_theta_min      2.24
_cell_volume                     2981(5)
_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      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0866
_diffrn_reflns_av_sigmaI/netI    0.0878
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            21048
_diffrn_reflns_theta_full        25.30
_diffrn_reflns_theta_max         25.30
_diffrn_reflns_theta_min         2.24
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.9845
_exptl_absorpt_correction_T_min  0.9824
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.116
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.233
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         5390
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1295
_refine_ls_R_factor_gt           0.0833
_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^)+(0.1100P)^2^+1.9653P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2153
_refine_ls_wR_factor_ref         0.2472
_reflns_number_gt                3328
_reflns_number_total             5390
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np2006296_si_005.cif
_cod_data_source_block           p212121
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1501846