Antinociceptive Grayanane Diterpenoids from the Leaves of <i>Pieris japonica</i>.
Zheng, Guijuan; Zhou, Junfei; Huang, Lang; Zhang, Hao; Sun, Na; Zhang, Hanqi; Jin, Pengfei; Yue, Mingbo; Meng, Lingkui; Yao, Guangmin; Journal of natural products 82 (2019) 3330–3339; doi:10.1021/acs.jnatprod.9b00569

data_1556570
_publ_section_title
;
 Antinociceptive Grayanane Diterpenoids from the Leaves of <i>Pieris
 japonica</i>.
;
_journal_issue                   12
_journal_name_full               'Journal of natural products'
_journal_page_first              3330
_journal_page_last               3339
_journal_paper_doi               10.1021/acs.jnatprod.9b00569
_journal_volume                  82
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H30 O4'
_chemical_formula_weight         334.44
_space_group_IT_number           96
_space_group_name_Hall           'P 4nw 2abw'
_space_group_name_H-M_alt        'P 43 21 2'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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            8
_cell_length_a                   9.247(5)
_cell_length_b                   9.247(5)
_cell_length_c                   42.695(7)
_cell_measurement_reflns_used    22531
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      66.54
_cell_measurement_theta_min      4.14
_cell_volume                     3651(3)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Berndt, 1999)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0379
_diffrn_reflns_av_sigmaI/netI    0.0174
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       51
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            22843
_diffrn_reflns_theta_full        67.51
_diffrn_reflns_theta_max         67.51
_diffrn_reflns_theta_min         4.14
_exptl_absorpt_coefficient_mu    0.665
_exptl_absorpt_correction_T_max  0.9365
_exptl_absorpt_correction_T_min  0.8255
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.217
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.662
_refine_diff_density_min         -0.600
_refine_diff_density_rms         0.146
_refine_ls_abs_structure_details
;
Flack 0.12(8) determined using 1143 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259);
Hooft <i>et al.</i> (2010) and Spek (2009);
Hooft parameter = 0.11(8), 1265 Bijvoet pairs.
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         3276
_refine_ls_number_restraints     51
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.0833
_refine_ls_R_factor_gt           0.0817
_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^)+(0.1451P)^2^+1.5997P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2185
_refine_ls_wR_factor_ref         0.2204
_reflns_number_gt                3148
_reflns_number_total             3276
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            np9b00569_si_002.cif
_cod_data_source_block           180314_ygm_zgj2_12_1a
_cod_depositor_comments
'Adding full bibliography for 1556567--1556572.cif.'
_cod_database_code               1556570