Guanacastane Diterpenoids from the Plant Endophytic Fungus Cercospora sp.
Feng, Yu; Ren, Fengxia; Niu, Shubin; Wang, Lin; Li, Li; Liu, Xingzhong; Che, Yongsheng; Journal of natural products 77 (2014) 873–881; doi:10.1021/np4009688

data_1514174
_publ_section_title
;
 Guanacastane Diterpenoids from the Plant Endophytic Fungus Cercospora sp.
;
_journal_issue                   4
_journal_name_full               'Journal of natural products'
_journal_page_first              873
_journal_page_last               881
_journal_paper_doi               10.1021/np4009688
_journal_volume                  77
_journal_year                    2014
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C20 H28 O4'
_chemical_formula_sum            'C20 H28 O4'
_chemical_formula_weight         332.42
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2013-04-16
_audit_creation_method
;
  Olex2 1.1
  (compiled 2011.02.15 svn.r1672, GUI svn.r3494)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2270(7)
_cell_length_b                   11.0537(9)
_cell_length_c                   18.858(13)
_cell_measurement_reflns_used    1490
_cell_measurement_temperature    101.8
_cell_measurement_theta_max      29.2376
_cell_measurement_theta_min      3.2483
_cell_volume                     1714.9(12)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_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
'A short history of SHELX (Sheldrick, 2007)/Bruker'
_diffrn_ambient_temperature      101.8
_diffrn_detector_area_resol_mean 16.0971
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_details
;
  1 omega  -38.00   90.00   1.0000   25.0000
omega____ theta____ kappa____ phi______ frames
    -       21.2836    0.0000 -120.0000 128

  2 omega  -10.00   45.00   1.0000   25.0000
omega____ theta____ kappa____ phi______ frames
    -       21.2836 -110.0000  101.0000 55
;
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_UB_11      0.0154057000
_diffrn_orient_matrix_UB_12      0.0335743000
_diffrn_orient_matrix_UB_13      -0.0314800000
_diffrn_orient_matrix_UB_21      -0.0515463000
_diffrn_orient_matrix_UB_22      -0.0393456000
_diffrn_orient_matrix_UB_23      -0.0194040000
_diffrn_orient_matrix_UB_31      -0.0671393000
_diffrn_orient_matrix_UB_32      0.0378578000
_diffrn_orient_matrix_UB_33      0.0076982000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0316
_diffrn_reflns_av_unetI/netI     0.0590
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            5848
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.27
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.96197
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.229
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1.3(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         3358
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0527
_refine_ls_R_factor_gt           0.0431
_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^)+(0.0349P)^2^+0.0746P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0830
_refine_ls_wR_factor_ref         0.0870
_reflns_number_gt                2958
_reflns_number_total             3358
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np4009688_si_001.cif
_cod_data_source_block           exp_1248
_cod_depositor_comments
'Adding full bibliography for 1514174--1514175.cif.'
_cod_database_code               1514174
_reflns_odcompleteness_completeness 99.61
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32