Simplified Synthesis of Amphiphilic Siloxanes with Methyl Gluconyl Glycinate Functionalities via Transacetalation
作者:Takuya Ogawa
DOI:10.1021/ma0301698
日期:2003.11.1
New carbohydrate-functional siloxanes (CHFS) have successfully been synthesized by acid-catalyzed transacetalation between unprotected methyl gluconyl glycinate (MGG) as a hydrophilic component and an acetal-functional siloxane in DMF/dioxane mixed solvents. MGG, which can be regarded as a hybrid material composed of a saccharide and an amino acid, was easily synthesized in good yield by amide bond
通过在DMF /二恶烷混合溶剂中,作为亲水性组分的未保护的甲基葡萄糖酸甘氨酸酯(MGG)与缩醛官能的硅氧烷之间进行酸催化的反缩醛反应,已成功合成了新型碳水化合物官能的硅氧烷(CHFS)。MGG可以被认为是由糖和氨基酸组成的杂化材料,通过d之间的酰胺键形成,很容易以高收率合成-葡萄糖酸1,5-内酯和甘氨酸甲酯盐酸盐。结果表明,酰胺基和酯基在反缩醛化条件下均保持惰性。获得了耙型CHFS以及ABA型CHFS,而没有不溶性问题,表明使用这种改性的碳水化合物就结构通用性而言是非常有利的。如此获得的材料可溶于非极性溶剂(例如氯仿)和极性溶剂(例如DMF和DMSO)中。通过溶解度参数值估算MGG,葡萄糖和聚环氧乙烷的亲水性,并将其与水溶性数据进行比较。一项简单的CHFS乳化研究表明,值得对这些新材料进行深入研究,以发现其应用,尤其是个人护理和医疗保健应用。