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_1501844
_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            'C27 H38 O5'
_chemical_formula_weight         442.57
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_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                 111.429(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   31.267(6)
_cell_length_b                   6.8755(14)
_cell_length_c                   14.753(3)
_cell_measurement_reflns_used    3140
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.44
_cell_measurement_theta_min      2.38
_cell_volume                     2952.3(10)
_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 0.986
_diffrn_measured_fraction_theta_max 0.986
_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  0.0222
_diffrn_reflns_av_sigmaI/netI    0.0368
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10336
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.38
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9867
_exptl_absorpt_correction_T_min  0.9834
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.996
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
;
_refine_diff_density_max         0.812
_refine_diff_density_min         -0.210
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   2.0(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         5338
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0924
_refine_ls_R_factor_gt           0.0749
_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^)+(0.1527P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2065
_refine_ls_wR_factor_ref         0.2240
_reflns_number_gt                3903
_reflns_number_total             5338
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np2006296_si_003.cif
_cod_data_source_block           c2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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      C2
_cod_database_code               1501844