申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0220822A1
公开(公告)日:1987-05-06
An ascorbic acid or erythorbic acid derivative is represent ed by the following general formula:
wherein n represents an integer of 8 to 20.
A process for producing ascorbic acid or erythorbic acid derivatives, including those of the formula (I)a above comprises heat-treating 2,5,6-triacyl-substituted-ascorbic acir or -erythorbic acid represented by the following general formula:
wherein n represents an integer of 4 to 20, in the presence of water and/or a lower aliphatic alcohol at a temperature of 30°C to 100°C and thereby selectively eliminating only the acyl group at the 2-position.
抗坏血酸或赤藓红酸衍生物由以下通式表示:
其中 n 代表 8 至 20 的整数。
一种生产抗坏血酸或赤霉酸衍生物(包括上式(I)a 的衍生物)的工艺,包括将下式通式所代表的 2,5,6-三酰基-取代-抗坏血酸或赤霉酸进行热处理:
其中 n 代表 4 至 20 的整数,在水和/或低级脂肪醇存在下,温度为 30°C 至 100°C,从而选择性地只消除 2 位上的酰基。