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_1570258
_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 H18 O4'
_chemical_formula_sum            'C15 H18 O4'
_chemical_formula_weight         262.29
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2020-04-23
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-05-08 deposited with the CCDC.	2023-11-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 100.540(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.4115(5)
_cell_length_b                   6.9501(5)
_cell_length_c                   15.4228(12)
_cell_measurement_reflns_used    9875
_cell_measurement_temperature    298
_cell_measurement_theta_max      74.462
_cell_measurement_theta_min      2.914
_cell_volume                     675.65(9)
_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      298.0
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.988
_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  0.0384
_diffrn_reflns_av_unetI/netI     0.0245
_diffrn_reflns_Laue_measured_fraction_full 0.987
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            17282
_diffrn_reflns_point_group_measured_fraction_full 0.988
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.793
_diffrn_reflns_theta_min         2.914
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.763
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.6705
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1410 before and 0.0667 after correction. The Ratio of minimum to maximum transmission is 0.8895. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_description       block
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.140
_refine_diff_density_min         -0.129
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details
;
 Flack x determined using 1173 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.05(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         2732
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0332
_refine_ls_R_factor_gt           0.0320
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0378P)^2^+0.0743P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0794
_refine_ls_wR_factor_ref         0.0807
_reflns_Friedel_coverage         0.836
_reflns_Friedel_fraction_full    0.989
_reflns_Friedel_fraction_max     0.982
_reflns_number_gt                2647
_reflns_number_total             2732
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc04238c2.cif
_cod_data_source_block           cu_22020154_0m
_cod_depositor_comments
'Adding full bibliography for 1570253--1570262.cif.'
_cod_database_code               1570258
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.956
_shelx_estimated_absorpt_t_min   0.888
_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:
 C9(H9), C5(H5), C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C15(H15A,H15B), C4(H4A,H4B)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C12(H12A,H12B,H12C), C14(H14A,H14B,H14C)
;
_olex2_submission_special_instructions 'No special instructions were received'