Diterpenoids from the twigs and leaves of Fokienia hodginsii.
Wu, Xing-De; He, Juan; Li, Xing-Yao; Dong, Liao-Bin; Gong, Xun; Song, Liu-Dong; Li, Yan; Peng, Li-Yan; Zhao, Qin-Shi; Journal of natural products 76 (2013) 1032–1038; doi:10.1021/np400010c

data_1516012
_publ_section_title
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 Diterpenoids from the twigs and leaves of Fokienia hodginsii.
;
_journal_issue                   6
_journal_name_full               'Journal of natural products'
_journal_page_first              1032
_journal_page_last               1038
_journal_paper_doi               10.1021/np400010c
_journal_volume                  76
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H32 O2'
_chemical_formula_sum            'C20 H32 O2'
_chemical_formula_weight         304.46
_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                   8.3140(2)
_cell_length_b                   10.5467(3)
_cell_length_c                   20.9187(6)
_cell_measurement_reflns_used    9960
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      67.65
_cell_measurement_theta_min      4.70
_cell_volume                     1834.26(9)
_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 0.937
_diffrn_measured_fraction_theta_max 0.937
_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  0.0399
_diffrn_reflns_av_sigmaI/netI    0.0297
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            11963
_diffrn_reflns_theta_full        68.07
_diffrn_reflns_theta_max         68.07
_diffrn_reflns_theta_min         4.70
_exptl_absorpt_coefficient_mu    0.529
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.102
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             672
_exptl_crystal_size_max          0.64
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.151
_refine_diff_density_min         -0.139
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_coef       0.0067(6)
_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   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     205
_refine_ls_number_reflns         3068
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0345
_refine_ls_R_factor_gt           0.0343
_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^)+(0.0625P)^2^+0.1124P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0979
_refine_ls_wR_factor_ref         0.0981
_reflns_number_gt                3044
_reflns_number_total             3068
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np400010c_si_002.cif
_cod_data_source_block           cu_fwf_23_2_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/automatic-downloads/retrospective/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 
;
_cod_database_code               1516012