Synthesis of (-)-11-O-Debenzoyltashironin: Neurotrophic Sesquiterpenes Cause Hyperexcitation.
Ohtawa, Masaki; Krambis, Michael J.; Cerne, Rok; Schkeryantz, Jeffrey M.; Witkin, Jeffrey M.; Shenvi, Ryan A.; Journal of the American Chemical Society 139 (2017) 9637–9644; doi:10.1021/jacs.7b04206

data_4131332
_publ_section_title
;
 Synthesis of (-)-11-O-Debenzoyltashironin: Neurotrophic Sesquiterpenes
 Cause Hyperexcitation.
;
_journal_issue                   28
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9637
_journal_page_last               9644
_journal_paper_doi               10.1021/jacs.7b04206
_journal_volume                  139
_journal_year                    2017
_chemical_formula_moiety         'C15 H20 O3'
_chemical_formula_sum            'C15 H20 O3'
_chemical_formula_weight         248.31
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2017-04-12
_audit_creation_method
;
Olex2 1.2-beta
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5335)
;
_cell_angle_alpha                90
_cell_angle_beta                 99.133(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.0498(15)
_cell_length_b                   11.7372(17)
_cell_length_c                   10.9640(16)
_cell_measurement_reflns_used    9843
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      68.249
_cell_measurement_theta_min      4.084
_cell_volume                     1276.9(3)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2016)'
_computing_data_collection       'APEX3 v2016.9-0 (Bruker, 2016)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 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      100.0
_diffrn_detector                 'Bruker Platinum135 CCD'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD Area Detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'Fixed Chi Three-Circle Diffractometer'
_diffrn_measurement_device_type  'Brugaku D8 Pt-135'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'Double Bounce Multilayer Mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0454
_diffrn_reflns_av_unetI/netI     0.0292
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            18528
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        68.000
_diffrn_reflns_theta_max         68.263
_diffrn_reflns_theta_min         4.456
_diffrn_source                   'Micro Focus Rotating Anode'
_diffrn_source_type              'Rigaku MicroMax-007HF'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.712
_exptl_absorpt_correction_T_max  0.3201
_exptl_absorpt_correction_T_min  0.2258
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0946 before and 0.0658 after correction. The Ratio of minimum to maximum transmission is 0.7054. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            Colorless
_exptl_crystal_colour_primary    Colorless
_exptl_crystal_density_diffrn    1.292
_exptl_crystal_description       Plate
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.184
_exptl_crystal_size_mid          0.177
_exptl_crystal_size_min          0.069
_refine_diff_density_max         0.215
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         2335
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.0405
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0432P)^2^+0.6591P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0994
_refine_ls_wR_factor_ref         0.1001
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2251
_reflns_number_total             2335
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b04206_si_003.cif
_cod_data_source_block           Shenvi109
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_database_code               4131332
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.952
_shelx_estimated_absorpt_t_min   0.880
_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
2.a Ternary CH refined with riding coordinates:
 C9(H9)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C4(H4A,H4B), C7(H7A,H7B), C8(H8A,H8B), C11(H11A,H11B)
2.c Idealised Me refined as rotating group:
 C13(H13A,H13B,H13C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C)
;
_shelx_res_checksum              89564
_shelx_hkl_checksum              31372
_olex2_submission_special_instructions 'No special instructions were received'