Tandem ruthenium-catalyzed transfer-hydrogenative cyclization/intramolecular diels-alder reaction of enediynes affording dihydrocoumarin-fused polycycles.
Yamamoto, Yoshihiko; Matsui, Kazuma; Shibuya, Masatoshi; Organic letters 16 (2014) 1806–1809; doi:10.1021/ol500548x

data_1513954
_publ_section_title
;
 Tandem ruthenium-catalyzed transfer-hydrogenative
 cyclization/intramolecular diels-alder reaction of enediynes affording
 dihydrocoumarin-fused polycycles.
;
_journal_issue                   6
_journal_name_full               'Organic letters'
_journal_page_first              1806
_journal_page_last               1809
_journal_paper_doi               10.1021/ol500548x
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C23 H20 O5'
_chemical_formula_weight         376.39
_space_group_IT_number           14
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_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
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_cell_angle_alpha                90.00
_cell_angle_beta                 93.953(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.0755(14)
_cell_length_b                   13.4968(19)
_cell_length_c                   13.586(2)
_cell_measurement_reflns_used    2809
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      28.22
_cell_measurement_theta_min      2.53
_cell_volume                     1843.1(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      103(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            13773
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.802554
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.446
_refine_diff_density_min         -0.219
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         4568
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0680
_refine_ls_R_factor_gt           0.0519
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0769P)^2^+0.2870P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1258
_refine_ls_wR_factor_ref         0.1358
_reflns_number_gt                3575
_reflns_number_total             4568
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol500548x_si_002.cif
_cod_data_source_block           km51
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1513954