Diterpenes with bicyclo[2.2.2]octane moieties from the fungicolous fungus Xylaria longipes HFG1018.
Chen, He-Ping; Li, Jing; Zhao, Zhen-Zhu; Li, Xinyang; Liu, Shui-Lin; Wang, Qing-Yuan; Liu, Ji-Kai; Organic & biomolecular chemistry 18 (2020) 2410–2415; doi:10.1039/d0ob00220h

data_7157382
_publ_section_title
;
 Diterpenes with bicyclo[2.2.2]octane moieties from the fungicolous fungus
 Xylaria longipes HFG1018.
;
_journal_issue                   13
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2410
_journal_page_last               2415
_journal_paper_doi               10.1039/d0ob00220h
_journal_volume                  18
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_compound_source        'Xylaria longipes'
_chemical_formula_moiety         'C20 H28 O3'
_chemical_formula_sum            'C20 H28 O3'
_chemical_formula_weight         316.42
_chemical_name_systematic        'Xylarilongipin B'
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-11-04 deposited with the CCDC.	2020-03-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   7.6786(3)
_cell_length_b                   10.5655(4)
_cell_length_c                   40.1904(16)
_cell_measurement_reflns_used    9963
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      68.99
_cell_measurement_theta_min      4.33
_cell_volume                     3260.6(2)
_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-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0775
_diffrn_reflns_av_unetI/netI     0.0760
_diffrn_reflns_Laue_measured_fraction_full 0.975
_diffrn_reflns_Laue_measured_fraction_max 0.958
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       47
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            16385
_diffrn_reflns_point_group_measured_fraction_full 0.917
_diffrn_reflns_point_group_measured_fraction_max 0.896
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         69.270
_diffrn_reflns_theta_min         4.327
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.669
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_description       plate
_exptl_crystal_F_000             1376
_exptl_crystal_size_max          0.550
_exptl_crystal_size_mid          0.450
_exptl_crystal_size_min          0.050
_exptl_transmission_factor_max   0.7532
_exptl_transmission_factor_min   0.5110
_refine_diff_density_max         0.520
_refine_diff_density_min         -0.553
_refine_diff_density_rms         0.112
_refine_ls_abs_structure_details
;
 Flack x determined using 1569 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.162
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     423
_refine_ls_number_reflns         5475
_refine_ls_number_restraints     276
_refine_ls_restrained_S_all      1.138
_refine_ls_R_factor_all          0.0833
_refine_ls_R_factor_gt           0.0672
_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^)+(0.1428P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1827
_refine_ls_wR_factor_ref         0.2112
_reflns_Friedel_coverage         0.629
_reflns_Friedel_fraction_full    0.840
_reflns_Friedel_fraction_max     0.812
_reflns_number_gt                4758
_reflns_number_total             5475
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ob00220h2.cif
_cod_data_source_block           cu_lchb31_0m
_cod_depositor_comments
'Adding full bibliography for 7157381--7157383.cif.'
_cod_database_code               7157382
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.710
_shelx_estimated_absorpt_t_max   0.967
_shelx_res_checksum              81551