Alonso F.,University of Buenos Aires |
Cirigliano A.M.,University of Buenos Aires |
Davola M.E.,University of Buenos Aires |
Cabrera G.M.,University of Buenos Aires |
And 4 more authors.
Steroids | Year: 2014
Most sterols, such as cholesterol and ergosterol, become functional only after the removal of the two methyl groups at C-4 from their biosynthetic precursors. Nevertheless, some findings suggest that 4,4-dimethyl sterols might be involved in specific physiological processes. In this paper we present the synthesis of a collection of analogues of 4,4-dimethyl sterols with a diamide side chain and a preliminary analysis of their in vitro activity on selected biological systems. The key step for the synthesis involves an Ugi condensation, a versatile multicomponent reaction. Some of the new compounds showed antifungal and cytotoxic activity. © 2014 Elsevier Inc. All rights reserved.