98977-94-7Relevant academic research and scientific papers
Design of two alternative routes for the synthesis of naftifine and analogues as potential antifungal agents
Abonia, Rodrigo,Garay, Alexander,Castillo, Juan C.,Insuasty, Braulio,Quiroga, Jairo,Nogueras, Manuel,Cobo, Justo,Butassi, Estefanía,Zacchino, Susana
, (2018/03/09)
Two practical and efficient approaches have been implemented as alternative procedures for the synthesis of naftifine and novel diversely substituted analogues 16 and 20 in good to excellent yields, mediated by Mannich-type reactions as the key step of the processes. In these approaches, theγ-aminoalcohols 15 and 19 were obtained as the key intermediates and their subsequent dehydration catalyzed either by Br?nsted acids like H2SO4 and HCl or Lewis acid like AlCl3, respectively, led to naftifine, along with the target allylamines 16 and 20. The antifungal assay results showed that intermediates 18 (bearing both a β-aminoketo- and N-methyl functionalities in their structures) and products 20 were the most active. Particularly, structures 18b, 18c, and the allylamine 20c showed the lowest MIC values, in the 0.5-7.8 μg/mL range, against the dermatophytes Trichophyton rubrum and Trichophyton mentagrophytes. Interesting enough, compound 18b bearing a 4-Br as the substituent of the phenyl ring, also displayed high activity against Candida albicans and Cryptococcus neoformans with MIC80 = 7.8 μg/mL, being fungicide rather than fungistatic with a relevant MFC value = 15.6 μg/mL against C. neoformans.
Synthesis and Structure-Activity Relationships of Naftifine-Related Allylamine Antimycotics
Stuetz, Anton,Georgopoulos, Apostolos,Granitzer, Waltraud,Petranyi, Gabor,Berney, Daniel
, p. 112 - 125 (2007/10/02)
Naftifine (1) is the first representative of the new antifungal allylamine derivatives.Its biological activity is strictly bound to specific structural requirements that are unrelated to those of known antifungals.A tertiary allylamine function seems to be a prerequisite for activity against fungi.By systematic variation of the individual structural elements in 1, detailed structure-activity relationships are defined in which the phenyl ring is the structural feature permitting the widest variations.Versatile synthetic routes to allylamine derivatives and comparative biological data are presented.
