Formal synthesis of (+)-lactacystin from l-serine
Bulman Page, Philip C.; Goodyear, Ross L.; Chan, Yohan; Slawin, Alexandra M. Z.; Allin, Steven M.; RSC Advances 9 (2019) 30019–; doi:10.1039/C9RA07244F

data_7234159
_publ_section_title
;
 Formal synthesis of (+)-lactacystin from l-serine
;
_journal_issue                   51
_journal_name_full               'RSC Advances'
_journal_page_first              30019
_journal_paper_doi               10.1039/C9RA07244F
_journal_volume                  9
_journal_year                    2019
_chemical_formula_moiety         'C28 H33 N O8'
_chemical_formula_sum            'C28 H33 N O8'
_chemical_formula_weight         511.57
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2016-08-22
_audit_creation_method           'by CrystalStructure 4.2'
_audit_update_record
;
2019-05-14 deposited with the CCDC.    2019-09-12 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 105.0690(6)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   14.29830(9)
_cell_length_b                   10.41200(6)
_cell_length_c                   18.66340(11)
_cell_measurement_reflns_used    23392
_cell_measurement_temperature    93
_cell_measurement_theta_max      75.13
_cell_measurement_theta_min      2.46
_cell_volume                     2682.95(3)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_molecular_graphics    'CrystalStructure 4.2'
_computing_publication_material  'CrystalStructure 4.2 (Rigaku, 2015)'
_computing_structure_refinement  'SHELXL Version 2014/7 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2011 (Burla, et al., 2012)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 5.811
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0195
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            29951
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         75.443
_diffrn_reflns_theta_min         4.512
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.769
_exptl_absorpt_correction_T_max  0.857
_exptl_absorpt_correction_T_min  0.700
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1088.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.29
_refine_ls_extinction_coef       0.0127(5)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     335
_refine_ls_number_reflns         5454
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0439
_refine_ls_R_factor_gt           0.0437
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0619P)^2^+0.9014P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1118
_refine_ls_wR_factor_ref         0.1120
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5404
_reflns_number_total             5454
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c9ra07244f2.cif
_cod_data_source_block           racemic26
_cod_database_code               7234159
_shelx_res_checksum              62177