Anti-inflammatory Eudesmane Sesquiterpenoids from <i>Artemisia hedinii</i>.
Wang, Xing; Peng, Xia; Tang, Chunping; Zhou, Shuaizhen; Ke, Chang-Qiang; Liu, Yueling; Yao, Sheng; Ai, Jing; Ye, Yang; Journal of natural products 84 (2021) 1626–1637; doi:10.1021/acs.jnatprod.1c00177

data_1562745
_publ_section_title
;
 Anti-inflammatory Eudesmane Sesquiterpenoids from <i>Artemisia
 hedinii</i>.
;
_journal_issue                   5
_journal_name_full               'Journal of natural products'
_journal_page_first              1626
_journal_page_last               1637
_journal_paper_doi               10.1021/acs.jnatprod.1c00177
_journal_volume                  84
_journal_year                    2021
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C18 H26 O5'
_chemical_formula_sum            'C18 H26 O5'
_chemical_formula_weight         322.39
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2020-08-12
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.7335(3)
_cell_length_b                   12.1670(4)
_cell_length_c                   16.1121(5)
_cell_measurement_reflns_used    9854
_cell_measurement_temperature    140
_cell_measurement_theta_max      72.533
_cell_measurement_theta_min      3.633
_cell_volume                     1712.08(10)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      140.0
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0412
_diffrn_reflns_av_unetI/netI     0.0253
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            22659
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.526
_diffrn_reflns_theta_min         5.491
_exptl_absorpt_coefficient_mu    0.737
_exptl_absorpt_correction_T_max  0.6753
_exptl_absorpt_correction_T_min  0.4563
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Bruker;SADABS;2018
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.251
_exptl_crystal_description       block
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
 Flack x determined using 1343 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     213
_refine_ls_number_reflns         3357
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0336
_refine_ls_R_factor_gt           0.0326
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0421P)^2^+0.3638P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0835
_refine_ls_wR_factor_ref         0.0845
_reflns_Friedel_coverage         0.736
_reflns_Friedel_fraction_full    0.988
_reflns_Friedel_fraction_max     0.988
_reflns_number_gt                3258
_reflns_number_total             3357
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np1c00177_si_003.cif
_cod_data_source_block           22020522ahd1d2f2a_0m
_cod_depositor_comments
'Adding full bibliography for 1562743--1562751.cif.'
_cod_database_code               1562745
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.950
_shelx_estimated_absorpt_t_min   0.917
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Ternary CH refined with riding coordinates:
 C7(H7), C9(H9), C3(H3A)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C1(H1A,H1B), C6(H6A,H6B), C2(H2A,H2B)
2.c X=CH2 refined with riding coordinates:
 C13(H13A,H13B)
2.d Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C1''(H1'A,H1'B,H1'C), C2'(H2'A,H2'B,
 H2'C)
2.e Idealised tetrahedral OH refined as rotating group:
 O3(H3)
;
_olex2_submission_special_instructions 'No special instructions were received'