Unexpected Diels-Alder/Carbonyl-ene Cascade toward the Biomimetic Synthesis of Chloropupukeananin.
Suzuki, Takahiro; Miyajima, Yuria; Suzuki, Kaname; Iwakiri, Kanako; Koshimizu, Masaki; Hirai, Go; Sodeoka, Mikiko; Kobayashi, Susumu; Organic letters 15 (2013) 1748–1751; doi:10.1021/ol400549q

data_1511918
_publ_section_title
;
 Unexpected Diels-Alder/Carbonyl-ene Cascade toward the Biomimetic
 Synthesis of Chloropupukeananin.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1748
_journal_page_last               1751
_journal_paper_doi               10.1021/ol400549q
_journal_volume                  15
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_sum            'C16 H11 Cl O7'
_chemical_formula_weight         350.70
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_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                 101.984(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.187(2)
_cell_length_b                   7.3498(9)
_cell_length_c                   23.976(3)
_cell_measurement_reflns_used    5179
_cell_measurement_temperature    173(1)
_cell_measurement_theta_max      27.55
_cell_measurement_theta_min      2.40
_cell_volume                     2962.7(6)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(1)
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0128
_diffrn_reflns_av_sigmaI/netI    0.0248
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8090
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.59
_diffrn_reflns_theta_min         2.40
_exptl_absorpt_coefficient_mu    0.296
_exptl_absorpt_correction_T_max  0.9767
_exptl_absorpt_correction_T_min  0.9432
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;

XPREP; Bruker AXS 2000

;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.573
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.210
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     437
_refine_ls_number_reflns         6193
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0315
_refine_ls_R_factor_gt           0.0279
_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^)+(0.0265P)^2^+1.4478P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0634
_refine_ls_wR_factor_ref         0.0656
_reflns_number_gt                5793
_reflns_number_total             6193
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol400549q_si_002.cif
_cod_data_source_block           rmob0110
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2962.6(6)
_cod_original_sg_symbol_H-M      C2
_cod_database_code               1511918