Substituted Spiro Compounds and Their Use for Producing Pain-Relief Medicaments
申请人:Frank Robert
公开号:US20080269271A1
公开(公告)日:2008-10-30
The present invention relates to substituted spiro compounds, to processes for preparing them, to medicaments comprising these compounds and to the use of these compounds for producing medicaments.
[EN] LYSINE DERIVATIVES FUNCTIONALISED WITH LIPIDS<br/>[FR] DÉRIVÉS DE LYSINE FONCTIONNALISÉS AVEC DES LIPIDES
申请人:DSM IP ASSETS BV
公开号:WO2010112615A1
公开(公告)日:2010-10-07
The present invention relates to amino-acid derivatives functionalized with lipids. The amino-acid derivatives are functionalized with lipids via amide, urea or urethane bonds. The derivatives preferably have melting points in the range from 40 to 80 °C. The amino-acid derivative comprises protected lysinediisocyanate. The lipids are chosen from fatty alcohols, fatty amines, fatty acids, cholesterol or sterols. The invention also relates to a process for the preparation of amino-acid derivatives functionalized with lipids via amide, urea or urethane bonds by the reaction of a lipid with a protected lysinediisocyanate. The present invention further relates to the use of the amino acid derivatives in drug delivery.
Intramolecular hydrogen bonding guides a cationic amphiphilic organocatalyst to highly stereoselective aldol reactions in water
作者:Ángel M. Valdivielso、Alba Catot、Ignacio Alfonso、Ciril Jimeno
DOI:10.1039/c5ra12135c
日期:——
A novel amphiphilic guanidine organocatalyst, efficient for asymmetric aldol reactions of ketones in water at neutral pH, is disclosed. The reaction presented a clear substrate dependence depicting a free energy linear correlation with ee. Intramolecular hydrogen bonding in the acylguanidine moiety was identified as the key structural motif.
Antibacterial and antifungal mono- and disubstituted amidinoureas and amidinothioureas are obtained by interaction of guanidines and isocyanates or isothiocyanates.
抗菌和抗真菌的单取代和双取代的胍脲和胍硫脲是通过胍胺和异氰酸酯或异硫氰酸酯的相互作用获得的。
Synthesis and characterization of thiourea- and urea-linked glycolipids as low-molecular-weight hydrogelators
hydrogelating ability as compared to thiourea linked glycolipids. The influence of sugar headgroup and alkyl chain length on the glycolipid’s self-assembly has also been studied. The fibrillar structures of the supramolecular hydrogels have been characterized by scanning electron microscopy (SEM). The thermal properties of the hydrogels formed by urea linked glycolipids have been studied by differential scanning