Biomimetic Enantioselective Total Synthesis of (-)-Mycoleptodiscin A.
Dethe, Dattatraya H.; Sau, Susanta Kumar; Mahapatra, Samarpita; Organic letters 18 (2016) 6392–6395; doi:10.1021/acs.orglett.6b03292

data_1555970
_publ_section_title
;
 Biomimetic Enantioselective Total Synthesis of (-)-Mycoleptodiscin A.
;
_journal_issue                   24
_journal_name_full               'Organic letters'
_journal_page_first              6392
_journal_page_last               6395
_journal_paper_doi               10.1021/acs.orglett.6b03292
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C23 H31 N'
_chemical_formula_sum            'C23 H31 N'
_chemical_formula_weight         321.49
_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   geom
_audit_creation_date             2016-08-08
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.1278(5)
_cell_length_b                   11.0317(7)
_cell_length_c                   24.0691(17)
_cell_measurement_reflns_used    2866
_cell_measurement_temperature    100
_cell_measurement_theta_max      21.41
_cell_measurement_theta_min      2.98
_cell_volume                     1892.6(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.998
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1067
_diffrn_reflns_av_unetI/netI     0.1155
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            15818
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.498
_diffrn_reflns_theta_min         2.981
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.5954
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014/4) was used for absorption correction.
wR2(int) was 0.1007 before and 0.0689 after correction.
The Ratio of minimum to maximum transmission is 0.7984.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.128
_exptl_crystal_description       block
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.170
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details
;
 Flack x determined using 701 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -2.5(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         3517
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.1186
_refine_ls_R_factor_gt           0.0599
_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^)+(0.0395P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0899
_refine_ls_wR_factor_ref         0.1037
_reflns_Friedel_coverage         0.723
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                2304
_reflns_number_total             3517
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol6b03292_si_001.cif
_cod_data_source_block           20nova_0m_a
_cod_database_code               1555970
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C7(H7), C9(H9)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C11(H11A,H11B), C16(H16A,H16B), C22(H22A,H22B),
 C23(H23A,H23B)
2.c Aromatic/amide H refined with riding coordinates:
 N1(H1), C6(H6), C10(H10), C13(H13), C21(H21)
2.d Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C15(H15A,H15B,H15C), C17(H17A,H17B,H17C), C20(H20A,H20B,
 H20C)
;
_shelx_res_checksum              22484
_shelx_hkl_checksum              3424
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'