Total Synthesis of (-)-Maximiscin.
McClymont, Kyle S.; Wang, Feng-Yuan; Minakar, Amin; Baran, Phil S.; Journal of the American Chemical Society  (2020) –; doi:10.1021/jacs.0c03202

data_4134877
_publ_section_title
;
 Total Synthesis of (-)-Maximiscin.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.0c03202
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C13 H20 O4'
_chemical_formula_sum            'C13 H20 O4'
_chemical_formula_weight         240.29
_space_group_crystal_system      trigonal
_space_group_IT_number           144
_space_group_name_Hall           'P 31'
_space_group_name_H-M_alt        'P 31'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2019-10-15
_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                120
_cell_formula_units_Z            3
_cell_length_a                   9.34920(10)
_cell_length_b                   9.34920(10)
_cell_length_c                   13.5555(2)
_cell_measurement_reflns_used    9846
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      69.965
_cell_measurement_theta_min      5.463
_cell_volume                     1026.11(2)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0297
_diffrn_reflns_av_unetI/netI     0.0216
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            12778
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         69.958
_diffrn_reflns_theta_min         5.463
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.701
_exptl_absorpt_correction_T_max  0.7533
_exptl_absorpt_correction_T_min  0.6731
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0640 before and 0.0511 after correction. The Ratio of minimum to maximum transmission is 0.8935. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.167
_exptl_crystal_description       block
_exptl_crystal_F_000             390
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.120
_refine_diff_density_rms         0.027
_refine_ls_abs_structure_details
;
 Flack x determined using 1265 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.04(5)
_refine_ls_extinction_coef       0.0024(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     161
_refine_ls_number_reflns         2604
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0256
_refine_ls_R_factor_gt           0.0253
_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^)+(0.0401P)^2^+0.0858P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0665
_refine_ls_wR_factor_ref         0.0670
_reflns_Friedel_coverage         0.997
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.996
_reflns_number_gt                2579
_reflns_number_total             2604
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja0c03202_si_004.cif
_cod_data_source_block           baran744
_cod_original_cell_volume        1026.11(3)
_cod_database_code               4134877
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.908
_shelx_estimated_absorpt_t_min   0.908
_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:
 C1(H1), C2(H2A), C4(H4A), C6(H6), C11(H11)
2.b Secondary CH2 refined with riding coordinates:
 C3(H3A,H3B), C5(H5A,H5B)
2.c Aromatic/amide H refined with riding coordinates:
 C9(H9)
2.d X=CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.e Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C8(H8A,H8B,H8C)
2.f Idealised tetrahedral OH refined as rotating group with stretchable bonds:
 O2(H2), O4(H4)
;
_shelx_res_checksum              21654
_shelx_hkl_checksum              65614
_olex2_submission_special_instructions 'No special instructions were received'