Synthesis of new pentacyclic chromophores through a highly regio- and diastereoselective cascade process.
Chamas, Zein el abidine; Dietz, Olivier; Aubert, Emmanuel; Fort, Yves; Mamane, Victor; Organic & biomolecular chemistry 8 (2010) 4815–4818; doi:10.1039/c0ob00390e

data_7153492
_publ_section_title
;
 Synthesis of new pentacyclic chromophores through a highly regio- and
 diastereoselective cascade process.
;
_journal_issue                   21
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4815
_journal_page_last               4818
_journal_paper_doi               10.1039/c0ob00390e
_journal_volume                  8
_journal_year                    2010
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C20 H15 N O2'
_chemical_formula_sum            'C20 H15 N O2'
_chemical_formula_weight         301.33
_chemical_name_common
;12-Hydroxy-5-methyl-11b,12-dihydro-11a-aza-indeno(2,1-
a)fluoren-11-one
;
_chemical_name_systematic
;
12-Hydroxy-5-methyl-11b,12-dihydro-11a-aza-indeno[2,1-a]fluoren-11-one
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.03310(7)
_cell_length_b                   15.7754(2)
_cell_length_c                   22.1253(3)
_cell_measurement_reflns_used    18092
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      45.3947
_cell_measurement_theta_min      3.6778
_cell_volume                     1407.69(4)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR_92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      110(2)
_diffrn_detector_area_resol_mean 10.4508
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'XCalibur Oxford Diffraction Kappa CCD'
_diffrn_measurement_method       oscillation
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0216
_diffrn_reflns_av_sigmaI/netI    0.0178
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            23052
_diffrn_reflns_theta_full        34.64
_diffrn_reflns_theta_max         34.64
_diffrn_reflns_theta_min         3.68
_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  0.992
_exptl_absorpt_correction_T_min  0.978
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            'yellow - green'
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.3050
_exptl_crystal_size_mid          0.2788
_exptl_crystal_size_min          0.1038
_refine_diff_density_max         0.512
_refine_diff_density_min         -0.308
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.209
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         3499
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.209
_refine_ls_R_factor_all          0.0500
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0558P)^2^+0.5847P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1236
_refine_ls_wR_factor_ref         0.1248
_reflns_number_gt                3353
_reflns_number_total             3499
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ob00390e.txt
_cod_data_source_block           vm604
_cod_database_code               7153492