Metal-Free Synthesis of N-fused Quinazolino-quinazoline-diones as MALAT1 RNA triple helix Intercalator
Pathi , Vijay Babu; Das, Pranotosh; Guin, Abhyuday; Debnath, Manish; Banerji, Biswadip; RSC Medicinal Chemistry  (2024) –; doi:10.1039/D4MD00614C

data_7249486
_publ_section_title
;
 Metal-Free Synthesis of N-fused Quinazolino-quinazoline-diones as MALAT1
 RNA triple helix Intercalator
;
_journal_name_full               'RSC Medicinal Chemistry'
_journal_paper_doi               10.1039/D4MD00614C
_journal_year                    2024
_chemical_formula_moiety         'C21 H14 N4 O2'
_chemical_formula_sum            'C21 H14 N4 O2'
_chemical_formula_weight         354.37
_chemical_name_systematic
6-(pyridin-2-ylmethyl)-5H-quinazolino[3,2-a]quinazoline-5,12(6H)-dione
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_Int_Tables_number      2
_atom_sites_solution_primary     iterative
_audit_creation_date             2023-11-07
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2024-05-21 deposited with the CCDC.	2024-10-21 downloaded from the CCDC.
;
_cell_angle_alpha                93.016(2)
_cell_angle_beta                 112.640(2)
_cell_angle_gamma                111.021(2)
_cell_formula_units_Z            2
_cell_length_a                   9.1156(5)
_cell_length_b                   9.7993(5)
_cell_length_c                   10.6132(5)
_cell_measurement_reflns_used    9881
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      66.72
_cell_measurement_theta_min      5.62
_cell_volume                     796.49(7)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_collection       'Bruker APEX3 ver.2018.7-2(Bruker AXS)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Bruker ShelXLe(Huebschle et all. 2011)'
_computing_publication_material  'Bruker ShelXLe(Huebschle et all. 2011)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick 2018)'
_computing_structure_solution    'SHELXT 2014/5(Sheldrick 2014)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'CPAD area detector'
_diffrn_detector_area_resol_mean 7.407
_diffrn_detector_type            'Bruker Photon III'
_diffrn_measured_fraction_theta_full 0.9898
_diffrn_measured_fraction_theta_max 0.9887
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_collimation    '0.5 mm double-pinhole'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0780
_diffrn_reflns_av_unetI/netI     0.0440
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            26844
_diffrn_reflns_theta_full        66.8250
_diffrn_reflns_theta_max         66.83
_diffrn_reflns_theta_min         5.62
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms Diamond'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.803
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.5496
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1586 before and 0.1015 after correction. The Ratio of minimum to maximum transmission is 0.7301. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.4775
_exptl_crystal_description       needle
_exptl_crystal_F_000             369.1967
_exptl_crystal_recrystallization_method 'Slow evaporation of solvent'
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.2944
_refine_diff_density_min         -0.3340
_refine_diff_density_rms         0.0739
_refine_ls_d_res_high            0.8386
_refine_ls_d_res_low             7.8726
_refine_ls_goodness_of_fit_ref   1.0668
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    27
_refine_ls_number_parameters     244
_refine_ls_number_reflns         2802
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.0668
_refine_ls_R_factor_all          0.0624
_refine_ls_R_factor_gt           0.0594
_refine_ls_shift/su_max          0.0000
_refine_ls_shift/su_mean         0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1016P)^2^+0.3094P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1642
_refine_ls_wR_factor_ref         0.1676
_reflns_Friedel_coverage         0.0
_reflns_limit_h_max              10
_reflns_limit_h_min              -10
_reflns_limit_k_max              11
_reflns_limit_k_min              -11
_reflns_limit_l_max              12
_reflns_limit_l_min              0
_reflns_number_gt                2587
_reflns_number_total             2802
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            d4md00614c2.cif
_cod_data_source_block           BBVB_290_0m_a
_cod_database_code               7249486
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C009(H00a,H00b)
2.b Aromatic/amide H refined with riding coordinates:
 C00O(H00O), C00P(H00P), C00N(H00N), C00H(H00H), C00K(H00K), C00L(H00L),
 C00I(H00I), C00E(H00E), C00R(H00R), C00Q(H00Q), C00M(H00M), C00J(H00J)
;
_olex2_submission_special_instructions 'No special instructions were received'