Spirocyclic iridoid alkaloids from <i>Plumeria rubra</i>.
Gao, Xin-Hua; Zhou, Bin; Zimbres, Flavia M.; Zhang, Zai-Yong; Cassera, Maria B.; Zhao, Jin-Xin; Yue, Jian-Min; Organic & biomolecular chemistry 23 (2025) 960–966; doi:10.1039/d4ob01870b

data_7160321
_publ_section_title
;
 Spirocyclic iridoid alkaloids from <i>Plumeria rubra</i>.
;
_journal_issue                   4
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              960
_journal_page_last               966
_journal_paper_doi               10.1039/d4ob01870b
_journal_volume                  23
_journal_year                    2025
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C13 H13 N O3'
_chemical_formula_sum            'C13 H13 N O3'
_chemical_formula_weight         231.24
_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   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2020-02-28
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-08-19 deposited with the CCDC.	2024-12-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4661(2)
_cell_length_b                   8.8867(2)
_cell_length_c                   15.5541(4)
_cell_measurement_reflns_used    4631
_cell_measurement_temperature    170
_cell_measurement_theta_max      74.64
_cell_measurement_theta_min      5.69
_cell_volume                     1170.22(5)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      170.0
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0376
_diffrn_reflns_av_unetI/netI     0.0245
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.993
_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       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            13255
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.907
_diffrn_reflns_theta_min         5.689
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.773
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.6313
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1804 before and 0.0675 after correction. The Ratio of minimum to maximum transmission is 0.8375. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_description       block
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.150
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details
;
 Flack x determined using 961 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.11(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         2397
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0290
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0415P)^2^+0.1196P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0781
_refine_ls_wR_factor_ref         0.0790
_reflns_Friedel_coverage         0.712
_reflns_Friedel_fraction_full    0.997
_reflns_Friedel_fraction_max     0.993
_reflns_number_gt                2333
_reflns_number_total             2397
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ob01870b2.cif
_cod_data_source_block           cu_22020060_0m
_cod_depositor_comments
'Adding full bibliography for 7160318--7160321.cif.'
_cod_database_code               7160321
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.941
_shelx_estimated_absorpt_t_min   0.893
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Ternary CH refined with riding coordinates:
 C13(H13)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C6(H6A,H6B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C10(H10), C3(H3A), C4(H4)
2.d Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C)
2.e Idealised tetrahedral OH refined as rotating group:
 O3(H3)
;
_olex2_submission_special_instructions 'No special instructions were received'