Synthesis and Biological Activities of Lipid A Analogs: Modification of a Glycosidically Bound Group with Chemically Stable Polar Acidic Groups and Lipophilic Groups on the Disaccharide Backbone with Tetradecanoyl of N-Dodecanoylglycyl Groups.
作者:Tsuneo KUSAMA、Tsunehiko SOGA、Yashiyuki ONO、Eiji KUMAZAWA、Emiko SHIOYA、Kiyoshi NAKAYAMA、UOTO Kouichi、Yasuaki OSADA
DOI:10.1248/cpb.39.3244
日期:——
positions 3 and 3', and tetradecanoyl groups on the amino functions at positions 2 and 2'. Analog 7 is a 2, 3, 2' and 3'-tetrakis(N-dodecanoylglycyl) derivative, and analog 8 resembles compound 6, but the binding of the N-dodecanoylglycyl and tetradecanoyl groups at positions 2, 2' and 3, 3' are reversed. The third analog, 9, has the same acyl group configuration as compound 6, but has a 1,3-dicarboxyisopropyl
合成了六个新颖的脂质A类似物。前两个类似物4和5在具有四个十四烷酰基的二糖主链上具有α-糖苷结合的羧甲基或1,3-二羧异丙基。接下来的三个类似物6、7和8在1-alpha-O-膦酰氧乙基化的二糖主链上具有两个或四个N-十二烷酰基甘氨酰基。类似物6在位置3和3'的羟基官能团上具有N-十二烷酰基糖基,在位置2和2'的氨基官能团上具有十四烷酰基。类似物7是2、3、2'和3'-四(N-十二烷酰基糖基)衍生物,类似物8类似于化合物6,但是N-十二烷酰基糖基和十四烷酰基在2、2'和3、3位的结合'颠倒了。第三个类似物9与化合物6具有相同的酰基结构,但具有1,C-1位上的3-二羧基异丙基。化合物4和5对Meth A纤维肉瘤表现出明确的抗肿瘤活性,表明脂质A中C-1位的磷酸基团可以被羧酸取代而不降低抗肿瘤活性。在兔子中,化合物6和9表现出强大的抗肿瘤活性,但其毒性极低。另一方面,化合物7和8没有显示抗肿瘤