Skip to main content
. Author manuscript; available in PMC: 2011 Oct 4.
Published in final edited form as: J Org Chem. 2009 Jan 16;74(2):675–684. doi: 10.1021/jo801944d

Figure 3.

Figure 3

Key ROESY NMR correlation data (A) 1,3-diol acetonide at the C-29 and C-31 portion of compound 7. (B) The spiro-bis-tetrahydropyran ketal portion of compound 1. (C) The tetrahydropyran hemiketal portion of compound 2.