Quasi-Biomimetic Ring Contraction Catalyzed by a Cysteine-Based Nucleophile: Total Synthesis of Sch-642305, Some Analogs and their Putative anti-HIV Activities.
Dermenci, Alpay; Selig, Philipp S.; Domaoal, Robert A.; Spasov, Krasimir A.; Anderson, Karen S.; Miller, Scott J.; Chemical science (Royal Society of Chemistry : 2010) 2 (2011) 1568–; doi:10.1039/C1SC00221J

data_1515611
_publ_section_title
;
 Quasi-Biomimetic Ring Contraction Catalyzed by a Cysteine-Based
 Nucleophile: Total Synthesis of Sch-642305, Some Analogs and their
 Putative anti-HIV Activities.
;
_journal_issue                   8
_journal_name_full
'Chemical science (Royal Society of Chemistry : 2010)'
_journal_page_first              1568
_journal_paper_doi               10.1039/C1SC00221J
_journal_volume                  2
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C14 H20 O4 '
_chemical_formula_sum            'C14 H20 O4'
_chemical_formula_weight         252.31
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_audit_creation_date             2010-06-08
_audit_creation_method           'by CrystalStructure 3.8'
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   6.14187(12)
_cell_length_b                   11.3932(2)
_cell_length_c                   18.2633(4)
_cell_measurement_reflns_used    7257
_cell_measurement_temperature    93.1
_cell_measurement_theta_max      68.2
_cell_measurement_theta_min      7.2
_cell_volume                     1277.98(4)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        CrystalStructure
_computing_publication_material  'CrystalStructure 3.8'
_computing_structure_refinement  SHELXL
_computing_structure_solution    SHELXS97
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.043
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            7709
_diffrn_reflns_theta_full        68.19
_diffrn_reflns_theta_max         68.19
_exptl_absorpt_coefficient_mu    0.781
_exptl_absorpt_correction_T_max  0.925
_exptl_absorpt_correction_T_min  0.770
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Higashi, T. (1995). Program for Absorption Correction.
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             544.00
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.27
_refine_diff_density_min         -0.24
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881. 857 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.2(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     168
_refine_ls_number_reflns         2219
_refine_ls_R_factor_gt           0.0378
_refine_ls_shift/su_max          0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0332P)^2^+0.5629P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0987
_reflns_number_gt                1910
_reflns_number_total             2219
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c1sc00221j.txt
_cod_data_source_block           '_ad04'
_cod_original_formula_sum        'C14 H20 O4 '
_cod_database_code               1515611