title: Facile syntheses of C2-symmetrical HIV-1 protease inhibitors.
abstract: With the goal of obtaining inexpensive yet potent anti-AIDS drugs, simple inhibitors of HIV-1 protease were synthesised. The C2-symmetrical pseudopeptidic substrate analogues can be prepared as inhibitors for HIV-1 protease starting from symmetrical ketones 3a-d by a facile four-step synthesis. After bromination of 3a-d to alpha,alpha'-dibromoketones 4a-d, we synthesised the diamino compounds 6a-c by Gabriel synthesis, which were then coupled with Z-valine to yield inhibitors including a central hydroxy group 8a-d a-i by azidation, reduction with LiAlH4 and coupling of the beta,beta'-diaminohydroxy compounds with appropriate peptides. The first set of compounds showed only weak inhibition whereas the latter reach Ki values of up to 3.0 microM.
authors.affiliation: Max-Planck-Institute of Biochemistry, Martinsried, Germany.
authors.forename: S
authors.initials: S
authors.lastname: König
authors.forename: I
authors.initials: I
authors.lastname: Ugi
authors.forename: H J
authors.initials: HJ
authors.lastname: Schramm
mesh_terms: D000438:Alcohols / Q000138:chemical synthesis* / Q000494:pharmacology; D017320:HIV Protease Inhibitors / Q000138:chemical synthesis* / Q000494:pharmacology; D015497:HIV-1 / Q000201:enzymology*; D007659:Ketones / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000438:Alcohols; D017320:HIV Protease Inhibitors; D007659:Ketones