Sublyratins A-O, Labdane-Type Diterpenoids from <i>Croton sublyratus</i>.
Qi, Jing-Jing; Zhou, Jun-Su; Zhang, Yan; Fan, Yao-Yue; Zhou, Bin; Liu, Hong-Chun; Zhao, Jin-Xin; Yue, Jian-Min; Journal of natural products 84 (2021) 2971–2980; doi:10.1021/acs.jnatprod.1c00804

data_1565512
_publ_section_title
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 Sublyratins A-O, Labdane-Type Diterpenoids from <i>Croton sublyratus</i>.
;
_journal_issue                   11
_journal_name_full               'Journal of natural products'
_journal_page_first              2971
_journal_page_last               2980
_journal_paper_doi               10.1021/acs.jnatprod.1c00804
_journal_volume                  84
_journal_year                    2021
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C20 H28 O4'
_chemical_formula_sum            'C20 H28 O4'
_chemical_formula_weight         332.42
_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             2020-09-03
_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                   6.4145(2)
_cell_length_b                   13.3715(3)
_cell_length_c                   20.4357(5)
_cell_measurement_reflns_used    9706
_cell_measurement_temperature    150
_cell_measurement_theta_max      74.529
_cell_measurement_theta_min      6.622
_cell_volume                     1752.80(8)
_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      150.0
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0524
_diffrn_reflns_av_unetI/netI     0.0268
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            26680
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.694
_diffrn_reflns_theta_min         5.449
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.692
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.6507
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1600 before and 0.0730 after correction. The Ratio of minimum to maximum transmission is 0.8632. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.260
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.218
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 1380 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.05(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     222
_refine_ls_number_reflns         3569
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0319
_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^)+(0.0454P)^2^+0.2741P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0821
_reflns_Friedel_coverage         0.724
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                3384
_reflns_number_total             3569
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np1c00804_si_008.cif
_cod_data_source_block           cu_22020637_0m
_cod_database_code               1565512
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.940
_shelx_estimated_absorpt_t_min   0.891
_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:
 C9(H9), C5(H5), C12(H12)
2.b Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B), C1(H1A,H1B), C2(H2A,H2B), C3(H3A,H3B)
2.c Aromatic/amide H refined with riding coordinates:
 C7(H7), C14(H14)
2.d X=CH2 refined with riding coordinates:
 C15(H15A,H15B)
2.e Idealised Me refined as rotating group:
 C20(H20A,H20B,H20C), C18(H18A,H18B,H18C), C16(H16A,H16B,H16C), C19(H19A,H19B,
 H19C)
2.f Idealised tetrahedral OH refined as rotating group:
 O4(H4)
;
_olex2_submission_special_instructions 'No special instructions were received'