Immunosuppressive Polyketides from Mantis-Associated Daldinia eschscholzii
Ying L. Zhang; Jie Zhang; Nan Jiang; Yan H. Lu; Lu Wang; Su H. Xu; Wei Wang; Gao F. Zhang; Qiang Xu; Hui M. Ge; Jing Ma; Yong C. Song; Ren X. Tan; Journal of the American Chemical Society 133 (2011) 5931–5940; doi:10.1021/ja110932p

data_4105951
_publ_section_title
;
 Immunosuppressive Polyketides from Mantis-Associated Daldinia
 eschscholzii
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5931
_journal_page_last               5940
_journal_paper_doi               10.1021/ja110932p
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C20 H16 O7'
_chemical_formula_weight         368.33
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                80.64(3)
_cell_angle_beta                 78.70(3)
_cell_angle_gamma                71.62(3)
_cell_formula_units_Z            2
_cell_length_a                   7.7060(15)
_cell_length_b                   9.3970(19)
_cell_length_c                   12.156(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      9
_cell_volume                     814.3(3)
_computing_cell_refinement       'CAD4 EXPRESS'
_computing_data_collection       'CAD4 EXPRESS(Enraf-Nonius,1994)'
_computing_data_reduction        'XCAD4(Harms & Wocadlo,1995)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Nonius cad4'
_diffrn_measurement_method       \w/2\q
_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  0.0225
_diffrn_reflns_av_sigmaI/netI    0.0296
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3194
_diffrn_reflns_theta_full        25.28
_diffrn_reflns_theta_max         25.28
_diffrn_reflns_theta_min         1.72
_diffrn_standards_decay_%        1
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  2h
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.9886
_exptl_absorpt_correction_T_min  0.9664
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_density_diffrn    1.502
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.491
_refine_diff_density_min         -0.453
_refine_diff_density_rms         0.057
_refine_ls_extinction_coef       0.045(7)
_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   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         2955
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0691
_refine_ls_R_factor_gt           0.0511
_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^)+(0.1000P)^2^+0.4200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1517
_refine_ls_wR_factor_ref         0.1688
_reflns_number_gt                2266
_reflns_number_total             2955
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja110932p_si_003.cif
_cod_data_source_block           Compound15
_cod_database_code               4105951