Formal Total Synthesis of (-)-Jiadifenolide and Synthetic Studies toward seco-Prezizaane-Type Sesquiterpenes.
Gomes, José; Daeppen, Christophe; Liffert, Raphael; Roesslein, Joel; Kaufmann, Elias; Heikinheimo, Annakaisa; Neuburger, Markus; Gademann, Karl; The Journal of organic chemistry 81 (2016) 11017–11034; doi:10.1021/acs.joc.6b02039

data_4037344
_publ_section_title
;
 Formal Total Synthesis of (-)-Jiadifenolide and Synthetic Studies toward
 seco-Prezizaane-Type Sesquiterpenes.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11017
_journal_page_last               11034
_journal_paper_doi               10.1021/acs.joc.6b02039
_journal_volume                  81
_journal_year                    2016
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C14 H16 O4'
_chemical_formula_sum            'C14 H16 O4'
_chemical_formula_weight         248.28
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 110.130(12)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.4095(17)
_cell_length_b                   13.267(3)
_cell_length_c                   7.6203(19)
_cell_measurement_reflns_used    1866
_cell_measurement_temperature    123
_cell_measurement_theta_max      24
_cell_measurement_theta_min      4
_cell_volume                     608.4(3)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      123
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Bruker Kappa Apex2'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.068
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            12794
_diffrn_reflns_theta_full        31.582
_diffrn_reflns_theta_max         31.582
_diffrn_reflns_theta_min         2.847
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             264
_exptl_crystal_size_max          0.210
_exptl_crystal_size_mid          0.160
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.40
_refine_diff_density_min         -0.35
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         1737
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0834
_refine_ls_R_factor_gt           0.0537
_refine_ls_shift/su_max          0.0003848
_refine_ls_shift/su_mean         0.0000468
_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: 
 0.668 0.582 0.448 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0751
_refine_ls_wR_factor_gt          0.0554
_refine_ls_wR_factor_ref         0.0587
_reflns_limit_h_max              8
_reflns_limit_h_min              -9
_reflns_limit_k_max              19
_reflns_limit_k_min              0
_reflns_limit_l_max              11
_reflns_limit_l_min              0
_reflns_number_gt                1501
_reflns_number_total             2109
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_r_factor_ref   0.0621
_oxford_refine_ls_scale          0.4735(16)
_oxford_reflns_number_all        2103
_oxford_reflns_threshold_expression_ref I>1.0\s(I)
_cod_data_source_file            jo6b02039_si_002.cif
_cod_data_source_block           15
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_atom_sites_solution_primary' value 'Direct' was changed
to 'direct' 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.

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' 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_original_sg_symbol_H-M      'P 21'
_cod_database_code               4037344
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
RIDE C   (   3,X'S) H   (  33,X'S) H   (  31,X'S) H   (  32,X'S) 
RIDE C   (   4,X'S) H   (  41,X'S) 
RIDE C   (   5,X'S) H   (  53,X'S) H   (  51,X'S) H   (  52,X'S) 
RIDE C   (   6,X'S) H   (  61,X'S) H   (  62,X'S) 
RIDE C   (   7,X'S) H   (  71,X'S) 
RIDE C   (  10,X'S) H   ( 102,X'S) H   ( 101,X'S) 
RIDE C   (  13,X'S) H   ( 132,X'S) H   ( 131,X'S) 
RIDE C   (  14,X'S) H   ( 142,X'S) H   ( 141,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;