Biomimetic Syntheses of (-)-Gochnatiolides A-C and (-)-Ainsliadimer B
Chao Li; Longyang Dian; Weidong Zhang; Xiaoguang Lei; Journal of the American Chemical Society 134 (2012) 12414–12417; doi:10.1021/ja305464s

data_4118436
_publ_section_title
;
 Biomimetic Syntheses of (-)-Gochnatiolides A-C and (-)-Ainsliadimer B
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12414
_journal_page_last               12417
_journal_paper_doi               10.1021/ja305464s
_journal_volume                  134
_journal_year                    2012
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C30 H28 O7'
_chemical_formula_sum            'C30 H28 O7'
_chemical_formula_weight         500.52
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_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_date             2012-02-22
_audit_creation_method
;
  Olex2 1.1
  (compiled 2011.02.15 svn.r1672, GUI svn.r3494)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 94.05(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.5941(15)
_cell_length_b                   11.207(2)
_cell_length_c                   14.909(3)
_cell_measurement_temperature    571(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.28
_cell_volume                     1265.7(4)
_computing_cell_refinement       Rapid-AUTO
_computing_data_collection       'Rapid-AUTO (Rigaku,2000)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC,2000)'
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  SHELXL-97,(Sheldrick,1997)
_computing_structure_solution    SHELXS-97,(Sheldrick,1997)
_diffrn_ambient_temperature      571(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku RAXIS RAPID IP'
_diffrn_measurement_method       \W
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0878
_diffrn_reflns_av_unetI/netI     0.3044
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5291
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.28
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.9907
_exptl_absorpt_correction_T_min  0.9726
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
                                  HIGASHI, T. (1995). Abscor-empirical
                                  Absorption Correction based on Fourier
                                  Series Approximation.
                                  Rigaku Corporation,Tokyo,Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_description       block
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.250
_refine_diff_density_min         -0.290
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   3.9(9)
_refine_ls_extinction_coef       0.0089(5)
_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   0.745
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     336
_refine_ls_number_reflns         5291
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.745
_refine_ls_R_factor_all          0.1680
_refine_ls_R_factor_gt           0.0518
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0498
_refine_ls_wR_factor_ref         0.0577
_reflns_number_gt                1551
_reflns_number_total             5291
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja305464s_si_001.cif
_cod_data_source_block           zj3a
_cod_database_code               4118436