Synthesis of Balsaminone A, a Naturally Occurring Pentacyclic Dinaphthofuran Quinone
Jalindar Padwal; William Lewis; Christopher J. Moody; Journal of Organic Chemistry 76 (2011) 8082–8087; doi:10.1021/jo201395n

data_4026626
_publ_section_title
;
 Synthesis of Balsaminone A, a Naturally Occurring Pentacyclic
 Dinaphthofuran Quinone
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8082
_journal_page_last               8087
_journal_paper_doi               10.1021/jo201395n
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C28 H16 O5, C2 H3 N'
_chemical_formula_sum            'C30 H19 N O5'
_chemical_formula_weight         473.46
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     other
_atom_sites_solution_secondary   difmap
_audit_creation_method           'enCIFer editing of SHELXL-97 created file'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.47983(16)
_cell_length_b                   16.7729(6)
_cell_length_c                   29.5976(12)
_cell_measurement_reflns_used    3707
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      74.6
_cell_measurement_theta_min      3.98
_cell_volume                     2223.96(14)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_molecular_graphics    ' ? '
_computing_publication_material  'enCIFer(Allen et al.,2004);PLATON(Spek,2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'smtbx-flip (Bourhis, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 10.3613
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'SuperNova, Single source at offset), Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0390
_diffrn_reflns_av_sigmaI/netI    0.0356
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            7795
_diffrn_reflns_theta_full        67.50
_diffrn_reflns_theta_max         74.78
_diffrn_reflns_theta_min         3.98
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.792
_exptl_absorpt_correction_T_max  1.477
_exptl_absorpt_correction_T_min  0.941
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.34.36 (release 02-08-2010 CrysAlis171 .NET) 
(compiled Jan  5 2010,16:28:46) 
Analytical numeric absorption correction using a multifaceted crystal 
model based on expressions derived by R.C. Clark & J.S. Reid. 
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) 
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.414
_exptl_crystal_description       rod
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.5662
_exptl_crystal_size_mid          0.1033
_exptl_crystal_size_min          0.0640
_refine_diff_density_max         0.592
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     326
_refine_ls_number_reflns         2602
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0528
_refine_ls_R_factor_gt           0.0472
_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^)+(0.0890P)^2^+0.5093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1270
_refine_ls_wR_factor_ref         0.1310
_reflns_number_gt                2324
_reflns_number_total             2602
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo201395n_si_003.cif
_cod_data_source_block           JPCJMG
_cod_database_code               4026626
_nottingham_internal_coll_name   JPCJMG
_nottingham_internal_coll_number 10372
_nottingham_internal_coll_client JP/CJM
_nottingham_internal_coll_type   custom
_nottingham_internal_coll_frame_time '5 and 20'
_nottingham_internal_coll_frame_width 1
_nottingham_internal_coll_frame_method '\w scans'
_nottingham_internal_coll_user   WL
_nottingham_internal_coll_date   4/5/2011
_nottingham_internal_process_user WL
_nottingham_internal_process_date 04/05/2011
_nottingham_internal_solution_user WL
_nottingham_internal_solution_date 4/5/2011
_nottingham_internal_refinement_user WL
_nottingham_internal_refinement_date 4/5/2011
_nottingham_internal_validation_user WL
_nottingham_internal_validation_date 5/5/2011
_nottingham_internal_archive_date 5/5/2011