Grayanane Diterpenoids from the Leaves of <i>Rhododendron auriculatum</i> and Their Analgesic Activities.
Sun, Na; Zheng, Guijuan; He, Meijun; Feng, Yuanyuan; Liu, Junjun; Wang, Meicheng; Zhang, Hanqi; Zhou, Junfei; Yao, Guangmin; Journal of natural products 82 (2019) 1849–1860; doi:10.1021/acs.jnatprod.9b00095

data_1552684
_publ_section_title
;
 Grayanane Diterpenoids from the Leaves of <i>Rhododendron auriculatum</i>
 and Their Analgesic Activities.
;
_journal_issue                   7
_journal_name_full               'Journal of natural products'
_journal_page_first              1849
_journal_page_last               1860
_journal_paper_doi               10.1021/acs.jnatprod.9b00095
_journal_volume                  82
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20.5 H38.5 O10.5'
_chemical_formula_weight         453.01
_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'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 110.5150(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.1477(5)
_cell_length_b                   7.1529(2)
_cell_length_c                   19.4739(5)
_cell_measurement_reflns_used    9205
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      66.86
_cell_measurement_theta_min      3.61
_cell_volume                     2367.56(11)
_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-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0481
_diffrn_reflns_av_unetI/netI     0.0561
_diffrn_reflns_Laue_measured_fraction_full 0.981
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            15517
_diffrn_reflns_point_group_measured_fraction_full 0.945
_diffrn_reflns_point_group_measured_fraction_max 0.945
_diffrn_reflns_theta_full        66.674
_diffrn_reflns_theta_max         66.674
_diffrn_reflns_theta_min         2.422
_exptl_absorpt_coefficient_mu    0.855
_exptl_absorpt_correction_T_max  0.3182
_exptl_absorpt_correction_T_min  0.1574
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_description       block
_exptl_crystal_F_000             982
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.090
_exptl_crystal_size_min          0.090
_refine_diff_density_max         0.644
_refine_diff_density_min         -0.427
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details
;
 Flack x determined using 2101 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.06(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     633
_refine_ls_number_reflns         7937
_refine_ls_number_restraints     155
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0849
_refine_ls_R_factor_gt           0.0649
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1058P)^2^+1.1657P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1713
_refine_ls_wR_factor_ref         0.1889
_reflns_Friedel_coverage         0.770
_reflns_Friedel_fraction_full    0.901
_reflns_Friedel_fraction_max     0.901
_reflns_number_gt                6179
_reflns_number_total             7937
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np9b00095_si_009.cif
_cod_data_source_block           shelx
_cod_depositor_comments
;

2022-11-30
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_formula_sum            'C41 H77 O21'
_cod_original_formula_weight         906.02
_cod_original_formula_units_Z            2
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1552684
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.904
_shelx_estimated_absorpt_t_max   0.927
_shelx_res_checksum              34092
_shelx_hkl_checksum              25174