Sweritranslactones A-C: Unusual Skeleton Secoiridoid Dimers via [4 + 2] Cycloaddition from Swertiamarin.
Liu, Lu; Xu, Guan-Ling; Ma, Xiao-Xia; Khan, Afsar; Tan, Wen-Hong; Yang, Zhu-Ya; Zhou, Zhi-Hong; The Journal of organic chemistry 82 (2017) 13263–13267; doi:10.1021/acs.joc.7b02383

data_4033230
_publ_section_title
;
 Sweritranslactones A-C: Unusual Skeleton Secoiridoid Dimers via
 [4&#x00A0;+ 2] Cycloaddition from Swertiamarin.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              13263
_journal_page_last               13267
_journal_paper_doi               10.1021/acs.joc.7b02383
_journal_volume                  82
_journal_year                    2017
_chemical_formula_moiety         'C19 H20 O7'
_chemical_formula_sum            'C19 H20 O7'
_chemical_formula_weight         360.35
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_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                 101.937(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.2447(10)
_cell_length_b                   13.8888(18)
_cell_length_c                   8.0725(11)
_cell_measurement_reflns_used    6481
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.02
_cell_measurement_theta_min      2.93
_cell_volume                     794.69(19)
_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 0.955
_diffrn_measured_fraction_theta_max 0.955
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0194
_diffrn_reflns_av_sigmaI/netI    0.0277
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            8118
_diffrn_reflns_theta_full        30.02
_diffrn_reflns_theta_max         30.02
_diffrn_reflns_theta_min         1.47
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.9965
_exptl_absorpt_correction_T_min  0.8943
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.506
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.99
_exptl_crystal_size_mid          0.70
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.290
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         4053
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0304
_refine_ls_R_factor_gt           0.0293
_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^)+(0.0474P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0783
_refine_ls_wR_factor_ref         0.0794
_reflns_number_gt                3952
_reflns_number_total             4053
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo7b02383_si_002.cif
_cod_data_source_block           mo_swy18_2_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/ACS/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 

 Adding full bibliography for 4033228--4033230.cif.
;
_cod_original_sg_symbol_H-M      'P n'
_cod_database_code               4033230