An Efficient, one-pot synthesis of isomeric ellipticine derivatives through intramolecular imino-Diels-Alder reaction
Gaddam, Vikram; Nagarajan, Rajagopal; Organic Letters 10 (2008) 1975–1978; doi:10.1021/ol800497u

data_1504654
_publ_section_title
;
 An Efficient, one-pot synthesis of isomeric ellipticine derivatives
 through intramolecular imino-Diels-Alder reaction
;
_journal_coden_ASTM              ORLEF7
_journal_issue                   10
_journal_name_full               'Organic Letters'
_journal_page_first              1975
_journal_page_last               1978
_journal_paper_doi               10.1021/ol800497u
_journal_volume                  10
_journal_year                    2008
_chemical_formula_moiety         'C24 H30 N2'
_chemical_formula_sum            'C24 H30 N2'
_chemical_formula_weight         346.50
_chemical_name_systematic
; 
 cis-8-ethyl-3,13,13-trimethyl-2,3,4,4a,5,8,13,13a-octahydro-1H-indolo
 [3,2-a]acridine 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 103.194(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.680(3)
_cell_length_b                   7.8737(17)
_cell_length_c                   20.108(4)
_cell_measurement_reflns_used    3074
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.77
_cell_measurement_theta_min      2.34
_cell_volume                     1954.6(7)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0482
_diffrn_reflns_av_sigmaI/netI    0.0568
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            10054
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.9932
_exptl_absorpt_correction_T_min  0.9719
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.178
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.435
_refine_diff_density_min         -0.183
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.185
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     243
_refine_ls_number_reflns         3417
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.185
_refine_ls_R_factor_all          0.1350
_refine_ls_R_factor_gt           0.1004
_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^)+(0.0742P)^2^+1.3689P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2085
_refine_ls_wR_factor_ref         0.2258
_reflns_number_gt                2498
_reflns_number_total             3417
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol800497u-file011.cif
_cod_data_source_block           rn56_m
_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 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

 Updated bibliographic information.

 Antanas Vaitkus,
 2019-09-22
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1504654