Asymmetric Total Synthesis of Caribenol A via an Intramolecular Diels-Alder Reaction
Jing-Chun Han; Lian-Zhu Liu; Yuan-Yuan Chang; Guo-Zong Yue; Jie Guo; Li-Yan Zhou; Chuang-Chuang Li; Zhen Yang; Journal of Organic Chemistry 78 (2013) 5492–5504; doi:10.1021/jo4006156

data_4028302
_publ_section_title
;
 Asymmetric Total Synthesis of Caribenol A via an Intramolecular
 Diels-Alder Reaction
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5492
_journal_page_last               5504
_journal_paper_doi               10.1021/jo4006156
_journal_volume                  78
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_sum            'C25 H27 N O6'
_chemical_formula_weight         437.48
_chemical_name_systematic
; 
 ? 
;
_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                 96.23(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.280(2)
_cell_length_b                   10.274(2)
_cell_length_c                   10.758(2)
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.99
_cell_volume                     1129.5(4)
_computing_cell_refinement       Rapid-AUTO
_computing_data_collection       'Rapid-AUTO (Rigaku,2000)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC,2000)'
_computing_molecular_graphics    'Siemens SHELXTL V4.2,(Sheldrick,1990)'
_computing_publication_material  SHELXL-97,(Sheldrick,1997)
_computing_structure_refinement  SHELXL-97,(Sheldrick,1997)
_computing_structure_solution    SHELXS-97,(Sheldrick,1997)
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku RAXIS RAPID IP'
_diffrn_measurement_method       \W
_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  0.0545
_diffrn_reflns_av_sigmaI/netI    0.0500
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4985
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.99
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.9730
_exptl_absorpt_correction_T_min  0.9642
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
                                  HIGASHI, T. (1995). Abscor-empirical 
                                  Absorption Correction based on Fourier 
                                  Series Approximation. 
                                  Rigaku Corporation,Tokyo,Japan. 
;
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.471
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(11)
_refine_ls_extinction_coef       0.140(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     293
_refine_ls_number_reflns         4985
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0618
_refine_ls_R_factor_gt           0.0537
_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^)+(0.0930P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1426
_refine_ls_wR_factor_ref         0.1486
_reflns_number_gt                4206
_reflns_number_total             4985
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo4006156_si_004.cif
_cod_data_source_block           llz3
_cod_original_cell_volume        1129.6(4)
_cod_database_code               4028302