A facile synthesis of a novel polyacetal containing trehalose residue in the main chain
A facile synthesis of a novel polyacetal containing trehalose residue in the main chain
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主链含海藻糖残基的新型聚缩醛的简便合成
DOI：
10.1016/j.carbpol.2003.03.002
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发表时间：
2004
影响因子：
11.2
通讯作者：
M. Shibata
中科院分区：
文献类型：
--
作者：
N. Teramoto;Youhei Arai;Y. Shibasaki;M. Shibata
以α，α-d-海藻糖为原料，在对甲苯磺酸存在下与α-海藻醛二甲缩醛反应，合成了一种主链含α，α-d-海藻糖残基的新型聚缩醛。作为反应条件的检查结果，当用GPC测量时，聚缩醛的重均分子量（Mw）为2000 - 8500。聚缩醛可溶于偶极非质子溶剂如DMSO和DMF。1H-NMR和MALDI-TOF MS分析表明，聚缩醛分子由吡喃葡萄糖氧基、二甲基缩醛基和二甲基缩醛水解生成的醛基组成。具有Mw 8500的聚缩醛在高达分解温度（325 °C）时没有显示出玻璃化转变温度。
A novel polyacetal containing α,α-d-trehalose residue in the main chain was successfully synthesized by the reaction of α,α-d-trehalose with terephthalaldehyde bis(dimethyl acetal) in the presence of p-toluenesulfonic acid. As a result of examination of reaction condition, weight-average molecular weight (Mw) of the polyacetal ranged from 2000 to 8500 when measured by GPC. The polyacetal was soluble in dipolar aprotic solvents such as DMSO and DMF. The1H-NMR and MALDI-TOF MS spectra revealed that the polyacetal is composed of the molecules terminated by glucopyranosyloxy group, dimethylacetal group, and aldehyde group generated by the hydrolysis of dimethyl acetal group. The polyacetal with Mw8500 showed no glass transition temperature up to the decomposition temperature (325 °C).