Fischernolides A–D, four novel diterpene-based meroterpenoid scaffolds with antitumor activities from Euphorbia fischeriana
Zhang, Jia; He, Jun; Cheng, Yung-Chi; Zhang, Pei-Cheng; Yan, Yu; Zhang, Hao-Jun; Zhang, Wei-Ku; Xu, Jie-Kun; Organic Chemistry Frontiers 6 (2019) 2312–; doi:10.1039/C8QO01379A

data_1554579
_publ_section_title
;
 Fischernolides A--D, four novel diterpene-based meroterpenoid scaffolds
 with antitumor activities from Euphorbia fischeriana
;
_journal_issue                   14
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              2312
_journal_paper_doi               10.1039/C8QO01379A
_journal_volume                  6
_journal_year                    2019
_chemical_formula_sum            'C31 H42 O11'
_chemical_formula_weight         590.65
_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
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-09-11 deposited with the CCDC.	2019-02-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   32.1461(4)
_cell_length_b                   11.48300(10)
_cell_length_c                   8.01620(10)
_cell_measurement_reflns_used    20279
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      73.4170
_cell_measurement_theta_min      2.7210
_cell_volume                     2959.05(6)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, AtlasS2'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0348
_diffrn_reflns_av_unetI/netI     0.0213
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -39
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            27626
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         73.611
_diffrn_reflns_theta_min         2.749
_exptl_absorpt_coefficient_mu    0.862
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.67547
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43f (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.337
_exptl_crystal_description       block
_exptl_crystal_F_000             1276
_exptl_crystal_size_max          0.160
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.295
_refine_diff_density_min         -0.183
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details
;
 Flack x determined using 2415 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.08(5)
_refine_ls_extinction_coef       0.0009(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.100
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     393
_refine_ls_number_reflns         5896
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0384
_refine_ls_R_factor_gt           0.0379
_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^)+(0.0451P)^2^+1.6619P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1000
_refine_ls_wR_factor_ref         0.1004
_reflns_Friedel_coverage         0.741
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.979
_reflns_number_gt                5815
_reflns_number_total             5896
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8qo01379a2.cif
_cod_data_source_block           AP_4
_cod_depositor_comments
;

2025-06-17
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_formula_sum            'C9.23 H13.23 O3.69'
_cod_original_formula_weight         183.27
_cod_original_formula_units_Z            13
_cod_database_code               1554579
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              88638
_shelx_hkl_checksum              19883