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Beilstein J. Org. Chem. 2023, 19, 91–99, doi:10.3762/bjoc.19.9
Graphical Abstract
Figure 1: Chemical structure of three isomeric cholesterols.
Figure 2: Selected previously described cholesterol derivatives with interesting antibacterial and cytotoxic ...
Scheme 1: Stereochemical outcome of OH/N3 transformations under different conditions.
Figure 3: Top: cholesterol (1) and the less polar product from the Appel reaction, cholesta-3,5-diene (9); bo...
Figure 4: Top: the more polar product from the Appel reaction 3β-bromocholest-5-ene (4); bottom: X-ray struct...
Figure 5: Top: 3α-azidocholest-5-ene (5) obtained by treatment of 4 with NaN3 in DMF; bottom: X-ray crystal s...
Scheme 2: Mechanistic interpretation of the conversion of cholesterol 1 into diene 9, bromide 4, and azides 5...
Figure 6: Compounds (next to 4, 5 and 9) to be corrected in refs. [10] and [11]. The respective bonds are highlighted...