Abinukitrine A, a unique 17,18-cyclolanostane triterpenoid from Abies nukiangensis.
Li, Yong-Li; Xue, Li-Jun; Li, Jie; Chen, Li-Ming; Wu, Jian-Jun; Xu, Zhuo-Ni; Chen, Ying; Tian, Yu-Ping; Yang, Xian-Wen; Organic & biomolecular chemistry 17 (2019) 2107–2109; doi:10.1039/c8ob03117g

data_7156664
_publ_section_title
;
 Abinukitrine A, a unique 17,18-cyclolanostane triterpenoid from Abies
 nukiangensis.
;
_journal_issue                   8
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2107
_journal_page_last               2109
_journal_paper_doi               10.1039/c8ob03117g
_journal_volume                  17
_journal_year                    2019
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C30 H44 O4, C5 H5 N'
_chemical_formula_sum            'C35 H49 N O4'
_chemical_formula_weight         547.75
_chemical_name_common            'Abinukitrine A'
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2018-11-11
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2018-12-07 deposited with the CCDC.
2019-01-29 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.068(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   36.5813(18)
_cell_length_b                   6.2452(3)
_cell_length_c                   13.6063(7)
_cell_measurement_reflns_used    9977
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      54.97
_cell_measurement_theta_min      3.555
_cell_volume                     3107.9(3)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_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      169.96
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0559
_diffrn_reflns_av_unetI/netI     0.0303
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       44
_diffrn_reflns_limit_h_min       -44
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            43183
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         55.114
_diffrn_reflns_theta_min         3.491
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.378
_exptl_absorpt_correction_T_max  0.7508
_exptl_absorpt_correction_T_min  0.5776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1312 before and 0.0739 after correction. The Ratio of minimum to maximum transmission is 0.7693. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.171
_exptl_crystal_description       block
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.174
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details
;
 Flack x determined using 2476 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.07(10)
_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     372
_refine_ls_number_reflns         5924
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0355
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0450P)^2^+1.2263P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0892
_refine_ls_wR_factor_ref         0.0908
_reflns_Friedel_coverage         0.818
_reflns_Friedel_fraction_full    0.997
_reflns_Friedel_fraction_max     0.989
_reflns_number_gt                5701
_reflns_number_total             5924
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ob03117g2.cif
_cod_data_source_block           mjl18542
_cod_depositor_comments          'Adding full bibliography for 7156664.cif.'
_cod_database_code               7156664
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.989
_shelx_estimated_absorpt_t_min   0.956
_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:
 C3(H3), C5(H5), C9(H9), C20(H20)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C6(H6A,H6B), C11(H11A,H11B), C12(H12A,H12B),
 C15(H15A,H15B), C16(H16A,H16B), C18(H18A,H18B), C22(H22A,H22B)
2.c Aromatic/amide H refined with riding coordinates:
 C7(H7), C24(H24), C32(H32), C33(H33), C34(H34), C35(H35), C36(H36)
2.d Idealised Me refined as rotating group:
 C19(H19A,H19B,H19C), C21(H21A,H21B,H21C), C27(H27A,H27B,H27C), C28(H28A,H28B,
 H28C), C29(H29A,H29B,H29C), C30(H30A,H30B,H30C)
2.e Idealised tetrahedral OH refined as rotating group:
 O1(H1)
;
_shelx_res_checksum              53331
_olex2_submission_special_instructions 'No special instructions were received'