Catalytic asymmetric total syntheses of myrtucommuacetalone, myrtucommuacetalone B, and callistrilones A, C, D and E.
Cheng, Min-Jing; Cao, Jia-Qing; Yang, Xin-Yi; Zhong, Li-Ping; Hu, Li-Jun; Lu, Xi; Hou, Bao-Long; Hu, Ya-Jian; Wang, Ying; You, Xue-Fu; Wang, Lei; Ye, Wen-Cai; Li, Chuang-Chuang; Chemical science 9 (2018) 1488–1495; doi:10.1039/c7sc04672c

data_1548239
_publ_section_title
;
 Catalytic asymmetric total syntheses of myrtucommuacetalone,
 myrtucommuacetalone B, and callistrilones A, C, D and E.
;
_journal_issue                   6
_journal_name_full               'Chemical science'
_journal_page_first              1488
_journal_page_last               1495
_journal_paper_doi               10.1039/c7sc04672c
_journal_volume                  9
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_sum            'C34 H45 O7'
_chemical_formula_weight         565.70
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/4
_audit_update_record
;
2017-10-28 deposited with the CCDC.
2017-11-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.38280(10)
_cell_length_b                   14.89930(10)
_cell_length_c                   32.6050(2)
_cell_measurement_reflns_used    22524
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      73.4790
_cell_measurement_theta_min      4.1520
_cell_volume                     3100.71(6)
_computing_cell_refinement       'CrysAlis PRO '
_computing_data_collection       'CrysAlis PRO '
_computing_data_reduction        'CrysAlis PRO '
_computing_structure_refinement  'SHELXL-2016/4 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Oxford Gemini S ultra'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0270
_diffrn_reflns_av_unetI/netI     0.0184
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            29525
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         73.670
_diffrn_reflns_theta_min         4.019
_exptl_absorpt_coefficient_mu    0.673
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.65065
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1220
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.161
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details
;
 Flack x determined using 2537 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.04(3)
_refine_ls_extinction_coef       0.0052(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/4 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         6184
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0283
_refine_ls_R_factor_gt           0.0278
_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^)+(0.0409P)^2^+0.5352P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0723
_refine_ls_wR_factor_ref         0.0727
_reflns_Friedel_coverage         0.731
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.978
_reflns_number_gt                6103
_reflns_number_total             6184
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7sc04672c2.cif
_cod_data_source_block           3_2_hy
_cod_depositor_comments
'Adding full bibliography for 1548236--1548240.cif.'
_cod_database_code               1548239
_shelx_shelxl_version_number     2016/4
_shelx_res_checksum              23577