Novel orally active inhibitors of β-1,3-glucan synthesis derived from enfumafungin.
Basic Information
ID: ALA3739316
Journal: Bioorg Med Chem Lett
Title: Novel orally active inhibitors of β-1,3-glucan synthesis derived from enfumafungin.
Authors: Apgar JM, Wilkening RR, Greenlee ML, Balkovec JM, Flattery AM, Abruzzo GK, Galgoci AM, Giacobbe RA, Gill CJ, Hsu MJ, Liberator P, Misura AS, Motyl M, Nielsen Kahn J, Powles M, Racine F, Dragovic J, Habulihaz B, Fan W, Kirwan R, Lee S, Liu H, Mamai A, Nelson K, Peel M.
Abstract: The clinical success of the echinocandins, which can only be administered parentally, has validated β-1,3-glucan synthase (GS) as an antifungal target. Semi-synthetic modification of enfumafungin, a triterpene glycoside natural product, was performed with the aim of producing a new class of orally active GS inhibitors. Replacement of the C2 acetoxy moiety with various heterocycles did not improve GS or antifungal potency. However, replacement of the C3 glycoside with an aminoether moiety dramatically improved oral pharmacokinetic (PK) properties while maintaining GS and antifungal potency. Installing an aminotetrazole at C2 in conjunction with an N-alkylated aminoether at C3 produced derivatives with significantly improved GS and antifungal potency that exhibited robust oral efficacy in a murine model of disseminated candidiasis.
CiteXplore: 26542966
DOI: 10.1016/j.bmcl.2015.10.011
Patent ID: ┄