Different synthetic methodologies for the stereocontrolledsynthesis of substituted azetidines are reported. The approach utilizes an optimized oxidation reaction of gamma-(phenylseleno)alkyl arylsulfonamides, followed by the intramolecular substitution of the resulting phenylselenonyl group by the nitrogen atom.
The invention relates to renin inhibiting compounds of the formula ##STR1## wherein A is an N-protecting group; R.sub.1, R.sub.2 and R.sub.3 are independently selected from loweralkyl or lipophilic or aromatic amino acid side chains; and R.sub.4 is --CHO, --CO.sub.2 H, halomethyl or alkanoyl; and R.sub.5 is hydrogen or loweralkyl.
Renin-inhibiting di- and tripeptides, a process for their preparation,
申请人:Hoechst Aktiengesellschaft
公开号:US04855286A1
公开(公告)日:1989-08-08
The invention relates to compounds of the formula ##STR1## in which R.sup.1 is absent or denotes hydrogen, alkyl or acyl, A denotes an acyl radical or an amino acid residue, B denotes an amino acid residue, and R.sup.2, R.sup.3 and R.sup.4 are as defined in the specification, and to their salts, to a process for their preparation, to pharmaceutical products containing them, and to their use as medicaments, and intermediates for the preparation of these compounds.