Synthesis and preliminary assessment of fluorescent probes based on the competitive GPCR antagonists vismodegib and masupirdine
Alexander, Carlson; Cheung, Tsz-Lam; Kumar, Chowan Ashok; Hor, Catherine H. H.; Li, Huishan; Zou, Xiuzhi; Parker, David; RSC Advances 16 (2026) 17745–17752; doi:10.1039/D6RA01214K

data_7251844
_publ_section_title
;
 Synthesis and preliminary assessment of fluorescent probes based on the
 competitive GPCR antagonists vismodegib and masupirdine
;
_journal_issue                   20
_journal_name_full               'RSC Advances'
_journal_page_first              17745
_journal_page_last               17752
_journal_paper_doi               10.1039/D6RA01214K
_journal_volume                  16
_journal_year                    2026
_chemical_compound_source
;
?
;
_chemical_formula_moiety         ' C19 H20 O7 '
_chemical_formula_sum            'C19 H20 O7'
_chemical_formula_weight         360.36
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_block_doi                 10.5517/cc8h5c8
_audit_creation_date             04-27-04
_audit_creation_method           CRYSTALS_ver_12-03-99
_audit_update_record
;
2004-10-15 deposited with the CCDC.	2026-03-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.81400(10)
_cell_length_b                   13.7985(2)
_cell_length_c                   23.5044(3)
_cell_measurement_reflns_used    41020
_cell_measurement_temperature    200
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     3507.26(8)
_computing_cell_refinement
;
Denzo/Scalepack (Otwinowski & Minor, 1996)
;
_computing_data_collection
;
COLLECT (Nonius BV, 1997)
;
_computing_data_reduction
;
Denzo/Scalepack (Otwinowski & Minor, 1996)
;
_computing_molecular_graphics
;
CAMERON (Watkin et al 1996)
;
_computing_publication_material
;
CRYSTALS (Watkin et al 2003)
;
_computing_structure_refinement
;
CRYSTALS (Watkin et al 2003)
;
_computing_structure_solution
;
SIR92 (Altomare et al, 1994)
;
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
Nonius Kappa CCD
;
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.03
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            46563
_diffrn_reflns_theta_full        27.477
_diffrn_reflns_theta_max         27.477
_diffrn_reflns_theta_min         2.559
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.974
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            ' colourless '
_exptl_crystal_density_diffrn    1.365
_exptl_crystal_density_meas      ?
_exptl_crystal_description       ' rod '
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.19
_refine_diff_density_min         -0.17
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0803
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         2500
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0392
_refine_ls_R_factor_gt           0.0339
_refine_ls_shift/su_max          0.000310
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982)
[weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)]
where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax
Method = Robust Weighting (Prince, 1982)
W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^
A~i~ are:
0.550 0.342 0.257
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0451
_refine_ls_wR_factor_gt          0.0410
_refine_ls_wR_factor_ref         0.0410
_reflns_limit_h_max              14
_reflns_limit_h_min              0
_reflns_limit_k_max              17
_reflns_limit_k_min              0
_reflns_limit_l_max              30
_reflns_limit_l_min              0
_reflns_number_gt                2500
_reflns_number_total             4008
_reflns_threshold_expression     I>2.00u(I)
_cod_data_source_file            d6ra01214k2.cif
_cod_data_source_block           mss042
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 
;
_cod_original_cell_volume        3507.26(7)
_cod_original_sg_symbol_H-M      'P b c a '
_cod_original_formula_sum        ' C19 H20 O7 '
_cod_database_code               7251844