Unprecedented sesterterpenoids, orientanoids A-C: discovery, bioinspired total synthesis and antitumor immunity.
Zheng, Cheng-Yu; Zhao, Jin-Xin; Yuan, Chang-Hao; Peng, Xia; Geng, Meiyu; Ai, Jing; Fan, Yao-Yue; Yue, Jian-Min; Chemical science 14 (2023) 13410–13418; doi:10.1039/d3sc04238c

data_1570260
_publ_section_title
;
 Unprecedented sesterterpenoids, orientanoids A-C: discovery, bioinspired
 total synthesis and antitumor immunity.
;
_journal_issue                   46
_journal_name_full               'Chemical science'
_journal_page_first              13410
_journal_page_last               13418
_journal_paper_doi               10.1039/d3sc04238c
_journal_volume                  14
_journal_year                    2023
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C15 H20 O4'
_chemical_formula_sum            'C15 H20 O4'
_chemical_formula_weight         264.31
_space_group_crystal_system      tetragonal
_space_group_IT_number           78
_space_group_name_Hall           'P 4cw'
_space_group_name_H-M_alt        'P 43'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2020-07-22
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-08-07 deposited with the CCDC.	2023-11-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.0969(2)
_cell_length_b                   13.0969(2)
_cell_length_c                   8.2344(2)
_cell_measurement_reflns_used    9862
_cell_measurement_temperature    150
_cell_measurement_theta_max      72.289
_cell_measurement_theta_min      4.775
_cell_volume                     1412.44(5)
_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 0.990
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0372
_diffrn_reflns_av_unetI/netI     0.0223
_diffrn_reflns_Laue_measured_fraction_full 0.990
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            17538
_diffrn_reflns_point_group_measured_fraction_full 0.980
_diffrn_reflns_point_group_measured_fraction_max 0.973
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.281
_diffrn_reflns_theta_min         3.374
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.730
_exptl_absorpt_correction_T_max  0.7536
_exptl_absorpt_correction_T_min  0.5619
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1332 before and 0.0626 after correction. The Ratio of minimum to maximum transmission is 0.7456. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.243
_exptl_crystal_description       block
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.157
_refine_diff_density_min         -0.128
_refine_diff_density_rms         0.027
_refine_ls_abs_structure_details
;
 Flack x determined using 1217 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     179
_refine_ls_number_reflns         2714
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0274
_refine_ls_R_factor_gt           0.0273
_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^)+(0.0406P)^2^+0.1790P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0716
_reflns_Friedel_coverage         0.834
_reflns_Friedel_fraction_full    0.969
_reflns_Friedel_fraction_max     0.956
_reflns_number_gt                2698
_reflns_number_total             2714
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc04238c2.cif
_cod_data_source_block           cu_22020436_0m
_cod_depositor_comments
'Adding full bibliography for 1570253--1570262.cif.'
_cod_original_cell_volume        1412.44(6)
_cod_database_code               1570260
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.944
_shelx_estimated_absorpt_t_min   0.898
_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
2.a Ternary CH refined with riding coordinates:
 C8(H8), C1(H1A), C11(H11), C3(H3)
2.b Secondary CH2 refined with riding coordinates:
 C6(H6A,H6B), C9(H9A,H9B), C2(H2A,H2B)
2.c Idealised Me refined as rotating group:
 C13(H13A,H13B,H13C), C15(H15A,H15B,H15C), C14(H14A,H14B,H14C)
;
_olex2_submission_special_instructions 'No special instructions were received'