Highly efficient and low-cost process for synthesis of 2-O-α-d-glucopyranosyl-6-O-(2-propylpentanoyl)-l-ascorbic acid
作者:Yuji Iwaoka、Misaki Fukushima、Hideyuki Ito、Akihiro Tai
DOI:10.1016/j.procbio.2021.09.004
日期:2021.12
2-O-α-d-Glucopyranosyl-6-O-(2-propylpentanoyl)-l-ascorbic acid (6-bOcta-AA-2G) has shown a remarkable antitumor effect in an in vivo study. However, an efficient and low-cost process for synthesis of 6-bOcta-AA-2G has not been established yet. The process used for synthesis of 6-bOcta-AA-2G in this study consisted of three steps. The first step was acylation of l-ascorbic acid (AA) at the C-6 position
2- ø -α- D-吡喃葡萄糖-6- Ö - (2-丙基戊) -升抗坏血酸(6- bOcta-AA-2G)已经显示出在一个显着的抗肿瘤效果的体内研究。然而,合成 6-bOcta-AA-2G 的高效低成本工艺尚未建立。本研究中用于合成 6-bOcta-AA-2G 的过程包括三个步骤。第一步是酰化升在C-6位抗坏血酸(AA)与2-丙基戊酸在浓硫酸2 SO 4,在室温下放置24小时,得到6- ø - (2-丙基戊) -升-抗坏血酸(6-bOcta-AA)。接下来,通过来自Thermoanaerobacter sp. 的环糊精葡聚糖转移酶 (CGTase) 在 C-2 位置对 6-bOcta-AA 进行特异性糖基化。使用可溶性淀粉作为低成本糖基供体在乙酸盐缓冲液(pH 6.0)中在 40°C 下进行 24 小时。在 CGTase 的糖基化反应中,似乎生成了低聚葡萄糖基化的 6-bOcta-AA,