Explorations of caffeic acid derivatives: total syntheses of rufescenolide, yunnaneic acids C and D, and studies toward yunnaneic acids A and B.
Griffith, Daniel R.; Botta, Lorenzo; St Denis, Tyler G.; Snyder, Scott A.; The Journal of organic chemistry 79 (2014) 88–105; doi:10.1021/jo4023167

data_4029083
_publ_section_title
;
 Explorations of caffeic acid derivatives: total syntheses of
 rufescenolide, yunnaneic acids C and D, and studies toward yunnaneic
 acids A and B.
;
_journal_issue                   1
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              88
_journal_page_last               105
_journal_paper_doi               10.1021/jo4023167
_journal_volume                  79
_journal_year                    2014
_chemical_formula_sum            'C21.5 H21 Cl O7'
_chemical_formula_weight         426.83
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 117.2340(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.6231(14)
_cell_length_b                   22.3687(19)
_cell_length_c                   12.0748(10)
_cell_measurement_reflns_used    8633
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      30.62
_cell_measurement_theta_min      2.63
_cell_volume                     3992.1(6)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0504
_diffrn_reflns_av_sigmaI/netI    0.0436
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            31963
_diffrn_reflns_theta_full        30.74
_diffrn_reflns_theta_max         30.74
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.234
_exptl_absorpt_correction_T_max  0.9770
_exptl_absorpt_correction_T_min  0.8921
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1784
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_platon_squeeze_details
; 
The unit cell contains 4 methylene chloride Molecules which have been treated as diffuse contribution to the overall 
scattering without specific atom positions by SQUEEZE/PLATON. 
;
_refine_diff_density_max         0.461
_refine_diff_density_min         -0.420
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         6188
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0990
_refine_ls_R_factor_gt           0.0639
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1040P)^2^+0.4216P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1769
_refine_ls_wR_factor_ref         0.1930
_reflns_number_gt                3967
_reflns_number_total             6188
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo4023167_si_002.cif
_cod_data_source_block           s-sr
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_original_formula_sum        'C21.50 H21 Cl O7'
_cod_database_code               4029083