Usnic Acid Enaminone-Coupled 1,2,3-Triazoles as Antibacterial and Antitubercular Agents
Bangalore, Pavan K.; Vagolu, Siva K.; Bollikanda, Rakesh K.; Veeragoni, Dileep K.; Choudante, Pallavi C.; Misra, Sunil; Sriram, Dharmarajan; Sridhar, Balasubramanian; Kantevari, Srinivas; Journal of Natural Products  (2019) –; doi:10.1021/acs.jnatprod.9b00475

data_1556699
_publ_section_title
;
 Usnic Acid Enaminone-Coupled 1,2,3-Triazoles as Antibacterial and
 Antitubercular Agents
;
_journal_name_full               'Journal of Natural Products'
_journal_paper_doi               10.1021/acs.jnatprod.9b00475
_journal_year                    2019
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C21 H19 N O6'
_chemical_formula_sum            'C21 H19 N O6'
_chemical_formula_weight         381.37
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.89532(9)
_cell_length_b                   12.63419(15)
_cell_length_c                   20.7068(2)
_cell_measurement_reflns_used    9988
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      30.59
_cell_measurement_theta_min      2.54
_cell_volume                     1803.91(4)
_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2016)'
_computing_data_collection       '<i>APEX3</i> (Bruker, 2016)'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  '<i>SHELXL2014</i> (Sheldrick, 2015)'
_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2015)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0322
_diffrn_reflns_av_unetI/netI     0.0302
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            21931
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.591
_diffrn_reflns_theta_min         2.543
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6458
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker, 2016'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_description       block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.110
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Flack x determined using 1920 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         5516
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0471
_refine_ls_R_factor_gt           0.0414
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0712P)^2^+0.0942P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1088
_refine_ls_wR_factor_ref         0.1128
_reflns_Friedel_coverage         0.757
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                4933
_reflns_number_total             5516
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np9b00475_si_002.cif
_cod_data_source_block           KA812_0m
_cod_database_code               1556699
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.975
_shelx_estimated_absorpt_t_max   0.989
_shelx_res_checksum              4723
_shelx_hkl_checksum              60354