Artemyrianolides A–S, Cytotoxic Sesquiterpenoids from Artemisia myriantha
Tang, Shuang; Zhang, Xin-Tian; Ma, Yun-Bao; Huang, Xiao-Yan; Geng, Chang-An; Li, Tian-Ze; Zhang, Xue-Mei; Shen, Cheng; Su, Li-Hua; Gao, Zhen; Chen, Ji-Jun; Journal of Natural Products  (2020) –; doi:10.1021/acs.jnatprod.0c00396

data_1558916
_publ_section_title
;
 Artemyrianolides A--S, Cytotoxic Sesquiterpenoids from Artemisia
 myriantha
;
_journal_name_full               'Journal of Natural Products'
_journal_paper_doi               10.1021/acs.jnatprod.0c00396
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C17 H22 O6'
_chemical_formula_sum            'C17 H22 O6'
_chemical_formula_weight         322.34
_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   geom
_cell_angle_alpha                90
_cell_angle_beta                 91.2720(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.3771(2)
_cell_length_b                   12.8589(3)
_cell_length_c                   8.6273(2)
_cell_measurement_reflns_used    9924
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      72.3358
_cell_measurement_theta_min      5.1280
_cell_volume                     818.20(3)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_collection       'Bruker Instrument Service vV6.2.9'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2017)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 QUEST PHOTON II'
_diffrn_radiation_monochromator  'Helixos MX multilayer Optic'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0308
_diffrn_reflns_av_unetI/netI     0.0215
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            17118
_diffrn_reflns_theta_full        72.38
_diffrn_reflns_theta_max         72.38
_diffrn_reflns_theta_min         5.13
_diffrn_source                   'Ius Diamond'
_diffrn_source_type              Microfocus
_exptl_absorpt_coefficient_mu    0.823
_exptl_absorpt_correction_T_max  0.96
_exptl_absorpt_correction_T_min  0.78
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.164
_refine_diff_density_min         -0.161
_refine_ls_abs_structure_details
;

Flack x determined using 1503 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         3206
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0256
_refine_ls_R_factor_gt           0.0255
_refine_ls_shift/su_max          0.028
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0353P)^2^+0.1565P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0656
_refine_ls_wR_factor_ref         0.0657
_reflns_number_gt                3196
_reflns_number_total             3206
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np0c00396_si_002.cif
_cod_data_source_block           jss4
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               1558916
_shelx_res_checksum              14938
_shelx_hkl_checksum              55497