title: Synthesis of hydantoin analogues of (2S,3R,4S)-4-hydroxyisoleucine with insulinotropic properties.
abstract: The first synthesis of an optically pure (2R,3R,4S)-hydantoin 2, analogue of (2S,3R,4S)-4-hydroxyisoleucine, was achieved in two steps in un-optimized 35% overall yield from previously reported aldehyde synthon 1. (2R,3R,4S)-Hydantoin is stable at acidic pH. This solves the major drawback of (2S,3R,4S)-4-hydroxyisoleucine that easily cyclizes into inactive lactone. Furthermore, (2R,3R,4S)-hydantoin stimulates the insulin secretion by 150% at 25microM compared with 4-hydroxyisoleucine and insulin secretagogue drug repaglinide. In view of its stability and biological activity, (2R,3R,4S)-hydantoin represents a good candidate for type-2 diabetes management and control.
authors.affiliation: Institut de Chimie des Substances Naturelles, CNRS, UPR 2301, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
authors.forename: Didier
authors.initials: D
authors.lastname: Sergent
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: N André
authors.initials: NA
authors.lastname: Sasaki
authors.forename: Jamal
authors.initials: J
authors.lastname: Ouazzani
mesh_terms: D000818:Animals; D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy; D006827:Hydantoins / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D007328:Insulin / Q000378:metabolism; D000078790:Insulin Secretion; D007532:Isoleucine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D015394:Molecular Structure; D051381:Rats; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D006827:Hydantoins; D007328:Insulin; D007532:Isoleucine; C502516:(2S,3S,4R)-gamma-hydroxyisoleucine