Cytotoxic ent-Kaurane Diterpenoids from Salvia cavaleriei.
Zheng, Heng; Chen, Qiong; Zhang, Mengke; Lai, Yongji; Lei, Liang; Shu, Penghua; Zhang, Jinwen; Xue, Yongbo; Luo, Zengwei; Li, Yan; Yao, Guangmin; Zhang, Yonghui; Journal of natural products 76 (2013) 2253–2262; doi:10.1021/np400600c

data_1513226
_publ_section_title
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 Cytotoxic ent-Kaurane Diterpenoids from Salvia cavaleriei.
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_journal_issue                   12
_journal_name_full               'Journal of natural products'
_journal_page_first              2253
_journal_page_last               2262
_journal_paper_doi               10.1021/np400600c
_journal_volume                  76
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H28 O5'
_chemical_formula_weight         348.42
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2bc 2'
_symmetry_space_group_name_H-M   'P 2 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                   6.506
_cell_length_b                   13.700
_cell_length_c                   20.624
_cell_measurement_reflns_used    7757
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      70.44
_cell_measurement_theta_min      3.87
_cell_volume                     1838.262
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.884
_diffrn_measured_fraction_theta_max 0.884
_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  0.1119
_diffrn_reflns_av_sigmaI/netI    0.0472
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8460
_diffrn_reflns_theta_full        25.83
_diffrn_reflns_theta_max         25.83
_diffrn_reflns_theta_min         1.78
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9911
_exptl_absorpt_correction_T_min  0.9867
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.221
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(10)
_refine_ls_extinction_coef       0.042(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   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     233
_refine_ls_number_reflns         1821
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0413
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0623P)^2^+0.2764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1037
_refine_ls_wR_factor_ref         0.1043
_reflns_number_gt                1797
_reflns_number_total             1821
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np400600c_si_005.cif
_cod_data_source_block           e:\120305c\work\cu_120305c_0m
_cod_depositor_comments
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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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1838.3
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1513226