Bioactive ent-Pimarane and ent-Abietane Diterpenoids from the Whole Plants of Chloranthus henryi.
Xie, Chunfeng; Sun, Lingmei; Liao, Kai; Liu, Sheng; Wang, Meicheng; Xu, Jing; Bartlam, Mark; Guo, Yuanqiang; Journal of natural products 78 (2015) 2800–2807; doi:10.1021/acs.jnatprod.5b00781

data_1540528
_publ_section_title
;
 Bioactive ent-Pimarane and ent-Abietane Diterpenoids from the Whole
 Plants of Chloranthus henryi.
;
_journal_issue                   11
_journal_name_full               'Journal of natural products'
_journal_page_first              2800
_journal_page_last               2807
_journal_paper_doi               10.1021/acs.jnatprod.5b00781
_journal_volume                  78
_journal_year                    2015
_chemical_absolute_configuration 'CHOOSE rm ad rmad syn or unk'
_chemical_formula_moiety         'C21 H34 O3'
_chemical_formula_sum            'C21 H34 O3'
_chemical_formula_weight         334.48
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90.614(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.132(2)
_cell_length_b                   27.174(6)
_cell_length_c                   9.624(2)
_cell_measurement_reflns_used    1237
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      78.00
_cell_measurement_theta_min      30.40
_cell_volume                     1865.1(8)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b29'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b29 (Rigaku, 2013)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b29'
_computing_molecular_graphics    'CrystalStructure 4.1'
_computing_publication_material  'CrystalStructure 4.1 (Rigaku, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SIR2011 (Burla, et al., 2012)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 5.814
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0195
_diffrn_reflns_av_unetI/netI     0.0152
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.961
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            29412
_diffrn_reflns_point_group_measured_fraction_full 0.976
_diffrn_reflns_point_group_measured_fraction_max 0.943
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         80.041
_diffrn_reflns_theta_min         3.253
_exptl_absorpt_coefficient_mu    0.605
_exptl_absorpt_correction_T_max  0.886
_exptl_absorpt_correction_T_min  0.766
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.191
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.320
_exptl_crystal_size_mid          0.260
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.233
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.076
_refine_ls_abs_structure_details
; 
 Flack x determined using 3562 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_coef       0.0030(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     454
_refine_ls_number_reflns         7662
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0330
_refine_ls_R_factor_gt           0.0328
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0661P)^2^+0.1566P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0901
_refine_ls_wR_factor_ref         0.0903
_reflns_Friedel_coverage         0.920
_reflns_Friedel_fraction_full    0.967
_reflns_Friedel_fraction_max     0.923
_reflns_number_gt                7576
_reflns_number_total             7662
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np5b00781_si_003.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
'Adding full bibliography for 1540528--1540529.cif.'
_cod_database_code               1540528
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.830
_shelx_estimated_absorpt_t_max   0.889
_shelx_res_checksum              8177
_shelx_hkl_checksum              20188