Monophosphoryl lipid A analogues with varying 3-O-substitution: synthesis and potent adjuvant activity
作者:Zi-Hua Jiang、Wladyslaw A. Budzynski、Dongxu Qiu、Damayanthi Yalamati、R. Rao Koganty
DOI:10.1016/j.carres.2007.01.012
日期:2007.5
Salmonella minnesota R595 (R595 lipid A). The substituent at the 3-O-position of the reducing sugar does not have much effect on the adjuvant activity of monophosphoryl lipid A analogues. The preliminary lethal toxicity study indicates that the 3-O-acylated hepta-acyl monophosphoryl lipid A may not be more toxic than its 3-O-deacylated hexa-acyl analogue.
结构确定的免疫刺激佐剂在新一代疫苗的开发中起重要作用。这里描述了在还原糖的3-O-位具有不同取代的三种单磷酰基脂质A类似物(1-3)的合成及其有效的免疫刺激佐剂活性。合成涉及糖基化受体苄基3,4-二-O-苄基-2-脱氧-2-[(R)-3-十四烷酰氧基四癸酰胺基]-β-D-葡萄糖吡喃糖苷(16)和苄基3-O-的制备。烯丙基-4-O-苄基-2-脱氧-2-[(R)-3-十四烷酰氧基四癸酰胺基]-β-D-glu复制糖苷(17)。供体4,6-二-O-亚苄基-2-脱氧-2-(2',2',2'-三氯乙氧基羰基氨基)-α-d-gl核糖基三氯乙酰亚氨酸酯(21)与受体16和17之间的糖基化反应提供所需的beta-(1-> 6)-连接的二糖22和23。4,6-二-O-亚苄基的选择性还原性开环,在4'-羟基上安装磷酸基团,以及最终的整体脱苄基作用产生了设计的单磷酰基脂质A类似物1-3。在全合成脂质体疫苗系统的离