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. Author manuscript; available in PMC: 2020 Apr 16.
Published in final edited form as: Nature. 2019 Oct 16;575(7784):643–646. doi: 10.1038/s41586-019-1690-5

Figure 3. Late-stage, regio and stereo-selective oxidation of C10 over C1.

Figure 3.

Reagents and conditions for entry 3: 1. EDCI (3 equiv.), BzOH (3 equiv.), DMAP (0.1 equiv.), THF; 2. KHMDS (1.5 equiv), (±)-C (1.5 equiv); 2M HCl, 60 °C a Based on conversion.