Total synthesis of (-)-flueggenine A and (-)-15'-<i>epi</i>-flueggenine D.
Seo, Seung Mo; Kim, Dongwook; Kim, Taewan; Han, Sunkyu; Chemical science 16 (2025) 1216–1221; doi:10.1039/d4sc07525k

data_1573690
_publ_section_title
;
 Total synthesis of (-)-flueggenine A and (-)-15'-<i>epi</i>-flueggenine
 D.
;
_journal_issue                   3
_journal_name_full               'Chemical science'
_journal_page_first              1216
_journal_page_last               1221
_journal_paper_doi               10.1039/d4sc07525k
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C21 H34 I N O5 Si'
_chemical_formula_sum            'C21 H34 I N O5 Si'
_chemical_formula_weight         535.48
_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   mixed
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-2019/3
_audit_update_record
;
2024-09-23 deposited with the CCDC.	2024-12-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.9672(4)
_cell_length_b                   14.2728(6)
_cell_length_c                   19.4271(9)
_cell_measurement_reflns_used    9936
_cell_measurement_temperature    2035(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      2.54
_cell_volume                     2486.42(19)
_computing_cell_refinement       'Bruker APEX4'
_computing_data_collection       'Bruker APEX4'
_computing_data_reduction        'Bruker APEX4'
_computing_molecular_graphics    ORTEP
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXS-2013/1 (Sheldrick, 2013)'
_diffrn_ambient_temperature      2035(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'PHOTON II 14'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0548
_diffrn_reflns_av_unetI/netI     0.0316
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            34500
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.591
_diffrn_reflns_theta_min         2.536
_diffrn_source                   'I\/Y\`iS 3.0 Microfocus'
_exptl_absorpt_coefficient_mu    1.365
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5621
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_description       block
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.283
_exptl_crystal_size_mid          0.269
_exptl_crystal_size_min          0.117
_refine_diff_density_max         0.178
_refine_diff_density_min         -0.476
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details
;
 Flack x determined using 1980 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.020(8)
_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     302
_refine_ls_number_reflns         5717
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0256
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0238P)^2^+0.0427P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0530
_refine_ls_wR_factor_ref         0.0569
_reflns_Friedel_coverage         0.773
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                5072
_reflns_number_total             5717
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc07525k2.cif
_cod_data_source_block           A23255O_019
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'MULTI-SCAN' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 1573690--1573694.cif.
;
_cod_database_code               1573690
_shelx_shelxl_version_number     2019/3
_shelx_estimated_absorpt_t_min   0.699
_shelx_estimated_absorpt_t_max   0.857
_shelx_res_checksum              42410
_shelx_hkl_checksum              51495