Wojtkielewicz A, Kiełczewska U, Banel B, Morzycki JW. Study on the reaction of diosgenin acetate with trimethylsilylazide catalyzed by Lewis acids.
Steroids 2019;
147:58-61. [PMID:
30326212 DOI:
10.1016/j.steroids.2018.10.007]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/07/2018] [Accepted: 10/11/2018] [Indexed: 10/28/2022]
Abstract
The ring opening reaction of diosgenin acetate in presence of Lewis acids and trimethylsilyl azide was explored as a facile approach to the synthesis of an open chain derivative with a nitrogen-containing substituent at C26. The reaction, under optimal conditions (TMSOTf, 1 equiv.; TMSN3, 1.1 equiv.; DCM; 48 h; rt), provided satisfactory yield (40%) of furostane-26-nitrile in a single step.
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