Total Synthesis and Structural Revision of (\±)-Tricholomalides A and B
Zhang Wang; Sun-Joon Min; Samuel J. Danishefsky; Journal of the American Chemical Society 131 (2009) 10848–10849; doi:10.1021/ja9049433

data_4104861
_publ_section_title
;
 Total Synthesis and Structural Revision of (\+-)-Tricholomalides A and B
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10848
_journal_page_last               10849
_journal_paper_doi               10.1021/ja9049433
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C20 H28 O5'
_chemical_formula_weight         348.42
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 124.8310(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   33.206(3)
_cell_length_b                   6.6255(6)
_cell_length_c                   19.8029(19)
_cell_measurement_reflns_used    2893
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      22.88
_cell_measurement_theta_min      2.58
_cell_volume                     3576.2(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      125(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1400
_diffrn_reflns_av_sigmaI/netI    0.1021
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       -41
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            20786
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.49
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.9982
_exptl_absorpt_correction_T_min  0.9819
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_description       plate
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.059
_refine_ls_extinction_coef       0.00056(18)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         3665
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.1364
_refine_ls_R_factor_gt           0.0528
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0939
_refine_ls_wR_factor_ref         0.1170
_reflns_number_gt                1941
_reflns_number_total             3665
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja9049433_si_005.cif
_cod_data_source_block           15s10
_cod_database_code               4104861