(3<i>S</i>,4<i>S</i>,4a<i>R</i>,10a<i>S</i>)-5-Acetyl-3,4,4a,5,6,7,10,10a-octahydro-8-methoxy-7-methyl-6-oxo-2<i>H</i>-pyrano[3,2-<i>g</i>]pteridine-3,4-diyl Diacetate
Low, John N.; Ferguson, George; López M. Dolores; Quijano M. Luisa; Sánchez, Adolfo; Nogueras, Manuel; Cobo, Justo; Acta Crystallographica Section C 54 (1998) IUC9800060–; doi:10.1107/S0108270198099211

data_2007858
_publ_section_title
;(3<i>S</i>,4<i>S</i>,4a<i>R</i>,10a<i>S</i>)-5-Acetyl-3,4,4a,5,6,7,10,10a-octahydro-8-methoxy-7-methyl-6-oxo-2<i>H</i>-pyrano[3,2-<i>g</i>]pteridine-3,4-diyl
 Diacetate
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              IUC9800060
_journal_paper_doi               10.1107/S0108270198099211
_journal_volume                  54
_journal_year                    1998
_chemical_formula_moiety         'C17 H22 N4 O8'
_chemical_formula_sum            'C17 H22 N4 O8'
_chemical_formula_weight         410.39
_chemical_name_systematic
;
(3S,4S,4aR,10as)-5,10-Diacetyl-3,4,4a,5,6,7,10,10a-octahydro-8-methoxy-6-oxo
-2H-pyrano[3,2g]pteridin-3,4-diyl diacetate
;
_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'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9115(13)
_cell_length_b                   12.4531(13)
_cell_length_c                   16.053(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    294.0(10)
_cell_measurement_theta_max      17.86
_cell_measurement_theta_min      10.52
_cell_volume                     1981.4(5)
_computing_cell_refinement       'SET4 and CELDIM (Enraf-Nonius, 1992)'
_computing_data_collection       'CAD-4-PC Software (Enraf-Nonius, 1992)'
_computing_data_reduction        'DATRD2 in NRCVAX96 (Gabe et al., 1989)'
_computing_molecular_graphics
'NRCVAX96, ORTEPII (Johnson, 1976) and PLATON (Spek, 1998)'
_computing_publication_material
'NRCVAX96, SHELXL97  and WordPerfect macro PREP8 (Ferguson, 1998)'
_computing_structure_refinement  'NRCVAX96 and SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997b)'
_diffrn_ambient_temperature      294.0(10)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_av_sigmaI/netI    0.0665
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4728
_diffrn_reflns_theta_full        26.95
_diffrn_reflns_theta_max         26.95
_diffrn_reflns_theta_min         2.07
_diffrn_standards_decay_%        1.6
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.44
_refine_diff_density_max         0.315
_refine_diff_density_min         -0.223
_refine_ls_abs_structure_details 'Flack (1983), 1853 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.3(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         4305
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.095
_refine_ls_R_factor_gt           0.051
_refine_ls_shift/su_max          0.025
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0638P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.124
_reflns_number_gt                2511
_reflns_number_total             4305
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            qa0061.cif
_cod_data_source_block           9632
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_hydrogen_treatment' value 'constrained' was replaced with
the value 'constr' as specified in the replacement file
'src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_database_code               2007858