Total Synthesis of (±)-7-epi-Nemorosone.
Zhang, Qiang; Porco, Jr, John A; Organic letters 14 (2012) 1796–1799; doi:10.1021/ol300386t

data_1507574
_publ_section_title
;
 Total Synthesis of (+-)-7-epi-Nemorosone.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1796
_journal_page_last               1799
_journal_paper_doi               10.1021/ol300386t
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C26 H28 O5'
_chemical_formula_sum            'C26 H28 O5'
_chemical_formula_weight         420.48
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.029(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5279(4)
_cell_length_b                   12.1776(7)
_cell_length_c                   21.2420(12)
_cell_measurement_reflns_used    9923
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      33.38
_cell_measurement_theta_min      2.92
_cell_volume                     2202.9(2)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0214
_diffrn_reflns_av_sigmaI/netI    0.0202
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            20656
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.92
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9828
_exptl_absorpt_correction_T_min  0.9497
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.268
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.966
_refine_diff_density_min         -0.261
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     381
_refine_ls_number_reflns         5449
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0472
_refine_ls_shift/su_max          0.015
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0676P)^2^+1.0399P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1265
_refine_ls_wR_factor_ref         0.1326
_reflns_number_gt                4719
_reflns_number_total             5449
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol300386t_si_002.cif
_cod_data_source_block           porco231
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1507574