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1)  alkanoyl-6O-D-isoascorbate
D-异抗坏血酸脂肪酸酯
2)  D-Isoascorbyl stearate
D-异抗坏血酸硬脂酸酯
1.
D-Isoascorbyl stearate(D-IAS)was synthesized by the transesterification of D-isoascorbic acid and methyl stearate using concentrated sulfuric acid as reaction medium and catalyst in 73% yield.
最近,我们用D-异抗坏血酸和硬脂酸甲酯在浓H2SO4介质中通过酯交换反应合成了D-异抗坏血酸硬脂酸酯,收率73%;用红外光谱对产物进行了表征;用碘量法测定了产物在花生油、菜籽油、茶籽油和麻油中的溶解度,结果显示,在植物油中的溶解度,D-异抗坏血酸硬脂酸酯比D-异抗坏血酸明显增大;将产物用于猪油,通过强化试验测定其抗氧化性能,过氧化值(POV)数据表明D-异抗坏血酸硬脂酸酯是一种性能良好的油溶性抗氧化剂。
3)  ascorbyl fatty acid esters(AFAE)
抗坏血酸脂肪酸酯
1.
A novel route for synthesis of L-ascorbyl fatty acid esters(AFAE) was investigated.
研究了一种L-抗坏血酸脂肪酸酯(AFAE)合成新途径。
4)  D-isoascorbic acid
D-异抗坏血酸
1.
Five long-chain saturated alkanoyl-6O-D-isoascorbates(alkanoyl=decanoyl,lauroyl,myristoyl,palmitoyl and stearoyl) were synthesized by esterification(or transesterification) of D-isoascorbic acid with alkanoic acids using concentrated H_2SO_4 as a medium and a catalyst at room temperature.
用浓H2SO4作为反应介质和催化剂,通过直接酯化法或酯交换法合成了5个D-异抗坏血酸脂肪酸(癸酸,月桂酸,豆蔻酸,棕榈酸和硬脂酸)酯,其结构经1H NMR和IR表征。
2.
Seven n-alkyl aldehyde acetals of D-isoascorbic acid(3a~3g) were synthesized by the reaction of D-isoascorbic acid with n-alkyl aldehyde using p-toluene sulfonic acid as a catalyst, dimethyl acetamide as a solvent, cyclohexane as a water carrying agent.
以对甲苯磺酸为催化剂,N,N-二甲基乙酰胺为溶剂,环己烷为带水剂,直链饱和脂肪族醛与D-异抗坏血酸反应合成了7个D-异抗坏血酸缩醛(3a~3g),其结构经1H NMR,IR和MS表征。
5)  sodium D isoascorbate
D异抗坏血酸钠
6)  D-isovitamin C
D-异抗坏血酸C
补充资料:异抗坏血酸
分子式:
CAS号:

性质:C是L-抗坏血酸的差位(立体)异构体。从水中或二噁烷中析出的有光泽的颗粒晶体。169℃熔融并分解。易溶于水、乙醇和吡啶;溶于丙酮,微溶于甘油。其钠盐结晶体易溶于水,水溶液的pH5~6。工业级产品10%溶液之pH7.2~7.9。无毒。活性为L-抗坏血酸的十二分之一。具有很强的还原性能。以甲醇盐处理甲基-2-酮基-D-葡糖酸盐制得。用作食品的抗氧剂、锅炉水脱氧剂等。

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