Facile Synthesis of Tumor-Associated Carbohydrate Antigen Ganglioside GM<sub>3</sub>from Sialic Acid, Lactose, and Serine
作者:Guo-wen Xing、Li Chen、Fen-fen Liang
DOI:10.1002/ejoc.200900778
日期:2009.12
Ganglioside GM3 [α-Neu5Ac-(2,3)-β-Gal-(1,4)-β-Glc-(1,1)-Cer; 1] is considered as an important tumor-associated carbohydrate antigen, which can be used in the development of tumor vaccine. In this study, a facile and convergent synthetic strategy for GM3 was developed, and the preparation of three building blocks started from the most readily available compounds sialic acid, lactose, and L-serine. Ceramide
神经节苷脂 GM3 [α-Neu5Ac-(2,3)-β-Gal-(1,4)-β-Glc-(1,1)-Cer; 1] 被认为是一种重要的肿瘤相关糖类抗原,可用于肿瘤疫苗的开发。在这项研究中,开发了一种简便且收敛的 GM3 合成策略,并从最容易获得的化合物唾液酸、乳糖和 L-丝氨酸开始制备三个构建块。神经酰胺苷元 9 由 L-丝氨酸分 13 步构建,总产率为 6%,而乳糖基三氯乙酰亚胺酯 14 由乳糖分 7 步合成,产率为 25%。以我组开发的新型N-乙酰-5-N,4-O-恶唑烷酮保护的对甲苯硫代唾液酸15为供体,苯甲酰基保护的乳糖神经酰胺二醇23的唾液酸化反应以54%的收率成功完成。我们的策略在五个步骤中提供了更短的 GM3 线性全合成,总产率为 26%。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)