A concise total synthesis of (±)-anthecularin
Li, Yi; Nawrat, Christopher C.; Pattenden, Gerald; Winne, Johan M.; Organic & Biomolecular Chemistry 7 (2009) 639–640; doi:10.1039/b819454h

data_7150573
_publ_section_title
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 A concise total synthesis of (+-)-anthecularin
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_journal_issue                   4
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              639
_journal_page_last               640
_journal_paper_doi               10.1039/b819454h
_journal_volume                  7
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C15 H16 O4'
_chemical_formula_sum            'C15 H16 O4'
_chemical_formula_weight         260.28
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   6.5457(9)
_cell_length_b                   12.2932(15)
_cell_length_c                   30.973(4)
_cell_measurement_reflns_used    1284
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.91
_cell_measurement_theta_min      2.63
_cell_volume                     2492.3(6)
_computing_cell_refinement       'Bruker SAINT version 6.36A (Bruker, 2002)'
_computing_data_collection       'Bruker SMART version 5.625 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; SHELXTL (Sheldrick, 2008)'
_computing_molecular_graphics    ' ?'
_computing_publication_material  'enCIFer(Allen et al.,2004);PLATON(Spek,2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       omega
_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  0.0619
_diffrn_reflns_av_sigmaI/netI    0.0597
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9754
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.12
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.9898
_exptl_absorpt_correction_T_min  0.8488
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.387
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.293
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         2559
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.293
_refine_ls_R_factor_all          0.0910
_refine_ls_R_factor_gt           0.0809
_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^)+(0.0197P)^2^+4.4116P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1401
_refine_ls_wR_factor_ref         0.1433
_reflns_number_gt                2348
_reflns_number_total             2559
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b819454h.txt
_cod_data_source_block           hpbnoo
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_cell_volume        2492.4(6)
_cod_database_code               7150573