title: Cholesteryl and diosgenyl glycosteroids: synthesis and characterization of new smectic liquid crystals.
abstract: While present in large numbers in nature, studies on the physical chemical aspects of glycosteroids are quite rare and focused on cholesterol, and all compounds studied thus far have shown liquid crystalline properties in a narrow temperature range. New glycosteroids composed by cholesterol or diosgenin and different glycosidic moieties have been synthesized here in order to analyze the influence of the structure on the formation of mesophases. These compounds have been studied by crossed polarized optical microscopy. These studies have revealed that these new glycosteroids form Smetic A liquid crystals in a broad temperature range.
authors: Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France; Semences, Innovation, Protection, Recherche et Environnement (SIPRE), rue des Champs Potez, 62217 Achicourt, France.
authors: Rémi
authors: R
authors: Beaulieu
authors: Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France.
authors: Sébastien
authors: S
authors: Gottis
authors: Laboratoire de Physique des systèmes complexes EA 4663, Université de Picardie-Jules Verne, 33 rue St Leu, 80039 Amiens, France.
authors: Claire
authors: C
authors: Meyer
authors: Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France.
authors: Eric
authors: E
authors: Grand
authors: Semences, Innovation, Protection, Recherche et Environnement (SIPRE), rue des Champs Potez, 62217 Achicourt, France.
authors: Virginie
authors: V
authors: Deveaux
authors: Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France.
authors: José
authors: J
authors: Kovensky
authors: Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources (LG2A), CNRS FRE 3517, 33 rue Saint-Leu, 80039 Amiens, France; Institut de Chimie de Picardie FR 3085, Université de Picardie-Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France. Electronic address: imane.stasik@u-picardie.fr.
authors: Imane
authors: I
authors: Stasik
mesh_terms: D002784:Cholesterol / Q000138:chemical synthesis*; D004144:Diosgenin / Q000138:chemical synthesis*; D050866:Liquid Crystals / Q000737:chemistry; D008859:Microscopy, Polarization; D013696:Temperature
chemical_list: D002784:Cholesterol; D004144:Diosgenin
keywords: Characterization; Cholesteryl glycosteroids; Diosgenyl glycosteroids; Liquid crystals; Smectic A phase; Synthesis