title: Synthesis of sansalvamide A peptidomimetics: triazole, oxazole, thiazole, and pseudoproline containing compounds.
abstract: Peptidomimetic-based macrocycles typically have improved pharmacokinetic properties over those observed with peptide analogs. Described are the syntheses of 13 peptidomimetic derivatives that are based on active Sansalvamide A structures, where these analogs incorporate heterocycles (triazoles, oxazoles, thiazoles, or pseudoprolines) along the macrocyclic backbone. The syntheses of these derivatives employ several approaches that can be applied to convert a macrocyclic peptide into its peptidomimetic counterpart. These approaches include peptide modifications to generate the alkyne and azide for click chemistry, a serine conversion into an oxazole, a Hantzsch reaction to generate the thiazole, and protected threonine to generate the pseudoproline derivatives. Furthermore, we show that two different peptidomimetic moieties, triazoles and thiazoles, can be incorporated into the macrocyclic backbone without reducing cytotoxicity: triazole and thiazole.
authors.affiliation: Department of Chemistry and Biochemistry, 5500 Campanile Drive, San Diego State University, San Diego, CA 92182-1030.
authors.forename: Melinda R
authors.initials: MR
authors.lastname: Davis
authors.forename: Erinprit K
authors.initials: EK
authors.lastname: Singh
authors.forename: Hendra
authors.initials: H
authors.lastname: Wahyudi
authors.forename: Leslie D
authors.initials: LD
authors.lastname: Alexander
authors.forename: Joseph B
authors.initials: JB
authors.lastname: Kunicki
authors.forename: Lidia A
authors.initials: LA
authors.lastname: Nazarova
authors.forename: Kelly A
authors.initials: KA
authors.lastname: Fairweather
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Giltrap
authors.forename: Katrina A
authors.initials: KA
authors.lastname: Jolliffe
authors.forename: Shelli R
authors.initials: SR
authors.lastname: McAlpine