Total Synthesis of Phorboxazole A via de Novo Oxazole Formation: Strategy and Component Assembly
Bo Wang; T. Matthew Hansen; Ting Wang; Dimao Wu; Lynn Weyer; Lu Ying; Mary M. Engler; Melissa Sanville; Christopher Leitheiser; Mathias Christmann; Yingtao Lu; Jiehao Chen; Nicholas Zunker; Russell D. Cink; Feryan Ahmed; Chi-Sing Lee; Craig J. Forsyth; Journal of the American Chemical Society 133 (2011) 1484–1505; doi:10.1021/ja108906e

data_4105585
_publ_section_title
;
 Total Synthesis of Phorboxazole A via de Novo Oxazole Formation: Strategy
 and Component Assembly
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1484
_journal_page_last               1505
_journal_paper_doi               10.1021/ja108906e
_journal_volume                  133
_journal_year                    2011
_chemical_compound_source        'R. Cink / Prof. C. Forsyth'
_chemical_formula_sum            'C41 H62 O8 Si2'
_chemical_formula_weight         739.09
_chemical_name_common            96202
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 99.414(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   15.3315(9)
_cell_length_b                   8.2072(5)
_cell_length_c                   17.2595(11)
_cell_measurement_temperature    173(2)
_cell_volume                     2142.5(2)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_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  0.0447
_diffrn_reflns_av_sigmaI/netI    0.2455
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            6727
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.20
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.895
_exptl_absorpt_correction_type   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.146
_exptl_crystal_description       Needle
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(27)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   0.953
_refine_ls_goodness_of_fit_obs   1.171
_refine_ls_matrix_type           full
_refine_ls_number_parameters     460
_refine_ls_number_reflns         6726
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.000
_refine_ls_restrained_S_obs      1.170
_refine_ls_R_factor_all          0.2103
_refine_ls_R_factor_obs          0.0940
_refine_ls_shift/esd_max         -0.002
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0604P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1952
_refine_ls_wR_factor_obs         0.1477
_reflns_number_observed          3014
_reflns_number_total             6727
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ja108906e_si_003.cif
_cod_data_source_block           96202
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0604P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0604P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4105585