A distinctive transformation based diversity oriented synthesis of small ring carbocycles and heterocycles from biocatalytically derived enantiopure α-substituted-β-hydroxyesters.
Halder, Joydev; Das, Debabrata; Nanda, Samik; Organic & biomolecular chemistry 16 (2018) 2549–2575; doi:10.1039/C8OB00233A

data_7156139
_publ_section_title
;
 A distinctive transformation based diversity oriented synthesis of small
 ring carbocycles and heterocycles from biocatalytically derived
 enantiopure \a-substituted-\b-hydroxyesters.
;
_journal_issue                   14
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2549
_journal_page_last               2575
_journal_paper_doi               10.1039/C8OB00233A
_journal_volume                  16
_journal_year                    2018
_chemical_formula_moiety         'C27 H34 O3 Si'
_chemical_formula_sum            'C27 H34 O3 Si'
_chemical_formula_weight         434.63
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-01-18 deposited with the CCDC.
2018-03-05 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2816(14)
_cell_length_b                   11.7445(19)
_cell_length_c                   25.888(4)
_cell_measurement_reflns_used    29078
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.99
_cell_measurement_theta_min      1.57
_cell_volume                     2518.0(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'bruker smart apex II CCD'
_diffrn_measurement_method       '\ w scan'
_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  0.1226
_diffrn_reflns_av_sigmaI/netI    0.0817
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            29078
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.57
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_T_max  0.9884
_exptl_absorpt_correction_T_min  0.9769
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.160
_refine_diff_density_min         -0.157
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.10(19)
_refine_ls_extinction_coef       0.0078(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.981
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     286
_refine_ls_number_reflns         4417
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.981
_refine_ls_R_factor_all          0.1160
_refine_ls_R_factor_gt           0.0568
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0587P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1161
_refine_ls_wR_factor_ref         0.1396
_reflns_number_gt                2488
_reflns_number_total             4417
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c8ob00233a2.cif
_cod_data_source_block           sn_jh_610_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7156136--7156139.cif.
;
_cod_original_cell_volume        2517.9(7)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7156139