Isolation, identification and bioactivities of abietane diterpenoids from Premna szemaoensis
Pu, De-Bing; Wang, Ting; Zhang, Xing-Jie; Gao, Jun-Bo; Zhang, Rui-Han; Li, Xiao-Nian; Wang, Yong-Mei; Li, Xiao-Li; Wang, He-Yao; Xiao, Wei-Lie; RSC Advances 8 (2018) 6425–; doi:10.1039/C7RA13309J

data_7230112
_publ_section_title
;
 Isolation, identification and bioactivities of abietane diterpenoids from
 Premna szemaoensis
;
_journal_issue                   12
_journal_name_full               'RSC Advances'
_journal_page_first              6425
_journal_paper_doi               10.1039/C7RA13309J
_journal_volume                  8
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H26 O5'
_chemical_formula_sum            'C20 H26 O5'
_chemical_formula_weight         346.41
_chemical_name_common
(3S,16S)-12,16-epoxy-3,11,14-trihydroxy-17(15\\rightarrow16)-abeo-abieta-8(9),11(12),13(14)-triene-7-one
_chemical_name_systematic        'szemaoenoid J'
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-06-03 deposited with the CCDC.
2018-01-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 92.859(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5843(7)
_cell_length_b                   9.5501(6)
_cell_length_c                   15.2093(10)
_cell_measurement_reflns_used    6855
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.03
_cell_measurement_theta_min      3.82
_cell_volume                     1680.53(18)
_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      100(2)
_diffrn_measured_fraction_theta_full 0.920
_diffrn_measured_fraction_theta_max 0.920
_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  0.0536
_diffrn_reflns_av_sigmaI/netI    0.0691
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            10384
_diffrn_reflns_theta_full        69.25
_diffrn_reflns_theta_max         69.25
_diffrn_reflns_theta_min         2.91
_exptl_absorpt_coefficient_mu    0.794
_exptl_absorpt_correction_T_max  0.9843
_exptl_absorpt_correction_T_min  0.7419
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.369
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       sheet
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.444
_refine_diff_density_min         -0.561
_refine_diff_density_rms         0.111
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     464
_refine_ls_number_reflns         4801
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0701
_refine_ls_R_factor_gt           0.0627
_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^)+(0.1350P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1682
_refine_ls_wR_factor_ref         0.1743
_reflns_number_gt                4321
_reflns_number_total             4801
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ra13309j2.cif
_cod_data_source_block           cu_xpp14_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7230112