The Total Syntheses of Guttiferone A and 6-epi-Guttiferone A.
Horeischi, Fiene; Biber, Nicole; Plietker, Bernd; Journal of the American Chemical Society 136 (2014) 4026–4030; doi:10.1021/ja500063a

data_4121432
_publ_section_title
;
 The Total Syntheses of Guttiferone A and 6-epi-Guttiferone A.
;
_journal_issue                   10
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4026
_journal_page_last               4030
_journal_paper_doi               10.1021/ja500063a
_journal_volume                  136
_journal_year                    2014
_chemical_formula_moiety         'C26 H38 O4'
_chemical_formula_sum            'C26 H38 O4'
_chemical_formula_weight         414.56
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.543(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   28.6041(14)
_cell_length_b                   8.1727(4)
_cell_length_c                   22.0769(11)
_cell_measurement_reflns_used    8755
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.42
_cell_measurement_theta_min      1.52
_cell_volume                     4832.8(4)
_computing_cell_refinement       'Bruker APEXII Software Suite, 2008'
_computing_data_collection       'Bruker APEXII Software Suite, 2008'
_computing_data_reduction        'Bruker APEXII Software Suite, 2008'
_computing_molecular_graphics    'SHELXTL-plus, XP (Sheldrick, 1991)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker Kappa APEXII Duo'
_diffrn_measurement_method       'Omega + Phi Scans'
_diffrn_radiation_monochromator  Triumph
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0495
_diffrn_reflns_av_sigmaI/netI    0.0442
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            82103
_diffrn_reflns_theta_full        28.42
_diffrn_reflns_theta_max         28.42
_diffrn_reflns_theta_min         1.52
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.7406
_exptl_absorpt_correction_T_min  0.7089
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.140
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.330
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     569
_refine_ls_number_reflns         12054
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0778
_refine_ls_R_factor_gt           0.0486
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0539P)^2^+1.1233P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1055
_refine_ls_wR_factor_ref         0.1138
_reflns_number_gt                8755
_reflns_number_total             12054
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja500063a_si_003.cif
_cod_data_source_block           s2024lm
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4121432