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. Author manuscript; available in PMC: 2014 Apr 19.
Published in final edited form as: J Org Chem. 2013 Apr 11;78(8):3821–3831. doi: 10.1021/jo400275p

Figure 2.

Figure 2

a. General mechanism of Norrish-Yang type II photocyclization. b. Formation of 4/8 fused carbocycle from 1,2-cyclodecanone. c. Structures and carbon numbering of bryonolic acid and lanosterol.