Influence of diene substituent position on the stereochemical outcome in IMDA reaction of decatrienones. An asymmetric synthesis of C10-epi-dihydro-epi-deoxy arteannuin B.
Mondal, Sujit; Yadav, Ram Naresh; Ghosh, Subrata; Organic letters 13 (2011) 6078–6081; doi:10.1021/ol202562w

data_1502578
_publ_section_title
;
 Influence of diene substituent position on the stereochemical outcome in
 IMDA reaction of decatrienones. An asymmetric synthesis of
 C10-epi-dihydro-epi-deoxy arteannuin B.
;
_journal_issue                   22
_journal_name_full               'Organic letters'
_journal_page_first              6078
_journal_page_last               6081
_journal_paper_doi               10.1021/ol202562w
_journal_volume                  13
_journal_year                    2011
_chemical_absolute_configuration syn
_chemical_formula_sum            'C15 H24 O3'
_chemical_formula_weight         252.34
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 112.782(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.672(3)
_cell_length_b                   9.491(3)
_cell_length_c                   9.253(3)
_cell_measurement_temperature    150(2)
_cell_volume                     702.2(4)
_computing_cell_refinement       'Bruker Apex II'
_computing_data_collection       'Bruker Apex II'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'Mercury 2.3'
_computing_publication_material  Shelxl-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 3
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Apex II'
_diffrn_measurement_method       'Phi-Omega scan'
_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  0.0207
_diffrn_reflns_av_sigmaI/netI    0.0240
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            6629
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9935
_exptl_absorpt_correction_T_min  0.9776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.193
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.110
_refine_diff_density_min         -0.144
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     167
_refine_ls_number_reflns         2474
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0352
_refine_ls_R_factor_gt           0.0316
_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^)+(0.0426P)^2^+0.0617P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0779
_refine_ls_wR_factor_ref         0.0803
_reflns_number_gt                2275
_reflns_number_total             2474
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol202562w_si_003.cif
_cod_data_source_block           39_naresh56_0m
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1502578