An approach to the core skeleton of lancifodilactone F.
Wang, Qiaoling; Chen, Chuo; Organic letters 10 (2008) 1223–1226; doi:10.1021/ol800111j

data_1504576
_publ_section_title
;
 An approach to the core skeleton of lancifodilactone F.
;
_journal_issue                   6
_journal_name_full               'Organic letters'
_journal_page_first              1223
_journal_page_last               1226
_journal_paper_doi               10.1021/ol800111j
_journal_volume                  10
_journal_year                    2008
_chemical_formula_sum            'C18 H26 O4'
_chemical_formula_weight         306.39
_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                101.717(5)
_cell_angle_beta                 99.034(5)
_cell_angle_gamma                107.867(5)
_cell_formula_units_Z            2
_cell_length_a                   7.056(5)
_cell_length_b                   9.481(5)
_cell_length_c                   12.731(5)
_cell_measurement_temperature    291(2)
_cell_volume                     771.4(7)
_computing_cell_refinement       'HKL2000 v095.373'
_computing_data_collection       'collect, Nonius 1999'
_computing_data_reduction        'HKL2000 v095.373'
_computing_publication_material  'XCIF (Sheldrick and Bruker 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.910
_diffrn_measured_fraction_theta_max 0.910
_diffrn_measurement_device_type  'Kappa CCD'
_diffrn_measurement_method       Collect
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0620
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            2549
_diffrn_reflns_theta_full        25.17
_diffrn_reflns_theta_max         25.17
_diffrn_reflns_theta_min         4.31
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.239
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.20(8)
_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   0.901
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     304
_refine_ls_number_reflns         2549
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.901
_refine_ls_R_factor_all          0.0705
_refine_ls_R_factor_gt           0.0568
_refine_ls_shift/su_max          0.041
_refine_ls_shift/su_mean         0.008
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1651P)^2^+0.1324P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1647
_refine_ls_wR_factor_ref         0.1929
_reflns_number_gt                1846
_reflns_number_total             2549
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol800111j-file005.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1504576