A Highly Convergent and Biomimetic Total Synthesis of Portentol.
Cheng, Bichu; Trauner, Dirk; Journal of the American Chemical Society 137 (2015) 13800–13803; doi:10.1021/jacs.5b10009

data_4124731
_publ_section_title
;
 A Highly Convergent and Biomimetic Total Synthesis of Portentol.
;
_journal_issue                   43
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13800
_journal_page_last               13803
_journal_paper_doi               10.1021/jacs.5b10009
_journal_volume                  137
_journal_year                    2015
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C17 H24 O4'
_chemical_formula_sum            'C17 H24 O4'
_chemical_formula_weight         292.36
_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_block_code                C17H24O4_tq026_trauner
_audit_creation_method           SHELXL-2014
_audit_update_record             10-Jun-15
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.0783(6)
_cell_length_b                   14.0477(13)
_cell_length_c                   16.4886(13)
_cell_measurement_reflns_used    5786
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      24.9214
_cell_measurement_theta_min      2.8648
_cell_volume                     1639.5(2)
_computing_cell_refinement       'APEX2 v2012.4-3 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service v3.0.21'
_computing_data_reduction        'SAINT V8.18C (Bruker AXS Inc., 2011)'
_computing_structure_refinement
;
Sheldrick, G. M. (2008).
<i>Acta Cryst.</i> A<b>64</b>, 112--122.
;
_computing_structure_solution
;
A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A.
Guagliardi, A. G. G. Moliterni, G. Polidori, R. Spagna: SIR97: a new tool for
crystal structure determination and refinement; J. Appl. Crystallogr. 1999,
32, 115-119.
;
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'fixed-chi three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8Quest'
_diffrn_measurement_method       'mix of phi and omega scans'
_diffrn_radiation_collimation    'focusing mirrors'
_diffrn_radiation_monochromator  'focusing mirrors'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0605
_diffrn_reflns_av_unetI/netI     0.0355
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            18618
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.085
_diffrn_reflns_theta_max         25.09
_diffrn_reflns_theta_min         2.470
_diffrn_source                   'micro focus source'
_diffrn_source_current           1
_diffrn_source_power             50
_diffrn_source_type              'Bruker I\mS'
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9579
_exptl_absorpt_correction_T_min  0.7179
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.184
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.131
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details
;
 Flack x determined using 867 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.3(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     196
_refine_ls_number_reflns         2920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0581
_refine_ls_R_factor_gt           0.0423
_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^)+(0.0484P)^2^+0.1484P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0976
_reflns_Friedel_coverage         0.720
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                2389
_reflns_number_total             2920
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5b10009_si_003.cif
_cod_data_source_block           tq026
_cod_depositor_comments
'Adding full bibliography for 4124730--4124732.cif.'
_cod_database_code               4124731
_shelxl_version_number           2014-3
_shelx_res_checksum              68044
_shelx_hkl_checksum              28732