Efficient microwave-assisted preparation of squaric acid monoamides in water
作者:Carlos López、Manuel Vega、Elena Sanna、Carmen Rotger、Antoni Costa
DOI:10.1039/c3ra41369a
日期:——
Squaric acid monoamides (SQAMs) were prepared via microwave-enhanced direct reaction of amines with squaric acid in yields ranging from 41 to 92%. These compounds are strong acids, with pKa values ranging from 0.9 to 2.0 as determined by spectrophotometric titration in representative cases.
[EN] ANTIPARASITIC ACTIVITY OF SQUARAMIDE<br/>[ES] ACTIVIDAD ANTIPARASITARIA DE ESCUARAMIDAS<br/>[FR] ACTIVITÉ ANTIPARASITAIRE DES SQUARAMIDES
申请人:UNIV GRANADA
公开号:WO2014184416A1
公开(公告)日:2014-11-20
La presente invención se refiere a la síntesis y uso de compuestos de base escuaramida para el tratamiento de enfermedades de origen parasitario como son la Tripanosomiasis americana también conocida como enfermedad de Chagas o la Leishmaniasis.
Supramolecular Hydrogels Based on Minimalist Amphiphilic Squaramide-Squaramates for Controlled Release of Zwitterionic Biomolecules
作者:Carlos López、Marta Ximenis、Francisca Orvay、Carmen Rotger、Antonio Costa
DOI:10.1002/chem.201701029
日期:2017.6.1
prepared. The hydrogel (G′≈400 Pa, G′′≈57 Pa; at 1.0 % w/v; 1 Hz) obtained from 4‐nitrophenylsquaramide motif 1 is thermoreversible (T=57 °C at 0.2 % w/v), thixotropic, self‐healable, and undergoes irreversible shrinking in response to saline stress. Furthermore, the hydrogel is injectable and can be loaded with substantial amounts (5:1 excess molar ratio) of zwitterionicbiomolecules, such as l‐carnitine
Molecular Recognition of Zwitterions: Enhanced Binding and Selective Recognition of Miltefosine by a Squaramide-Based Host
作者:Carlos López、Elena Sanna、Lucas Carreras、Manel Vega、Carmen Rotger、Antoni Costa
DOI:10.1002/asia.201200881
日期:2013.1
between electrostatic and hydrogen‐bonding interactions has been demonstrated. A self‐complementary amidosquarate‐squaramide host for miltefosine has been disclosed. In DMSO, this rather structurally simple host exhibits high affinity and enhancedselectivity for miltefosine owing to the goal‐keeping effect of the amidosquarate unit.