Khripach VA, Zhabinskii VN, Fando GP, Kuchto AI, Lyakhov AS, Govorova AA, Groen MB, van der Louw J, de Groot A. The synthesis of functionalized 13,14-seco-steroids via Grob fragmentation.
Steroids 2004;
69:495-9. [PMID:
15246779 DOI:
10.1016/j.steroids.2004.04.009]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2003] [Revised: 04/20/2004] [Accepted: 04/27/2004] [Indexed: 10/26/2022]
Abstract
A synthetic methodology for the synthesis of 13,14-seco-steroids with substituents at C-14 and C-17 is described. The approach involves Grob fragmentation of 14beta-hydroxy-17beta-tosylates, hydroboration-oxidation of the intermediate delta13(17)-olefin, and hydride reduction of the 14-ketone. An unambiguous structural assignment of (13R,14S,17S)-14,17-diacetoxy-3-methoxy-7alpha-methyl-13,14-secoestra-1,3,5(10)-triene was determined by X-ray analysis.
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