Anti-AIDS agents 73: Structure–activity relationship study and asymmetric synthesis of 3-O-monomethylsuccinyl-betulinic acid derivatives
作者:Keduo Qian、Kyoko Nakagawa-Goto、Donglei Yu、Susan L. Morris-Natschke、Theodore J. Nitz、Nicole Kilgore、Graham P. Allaway、Kuo-Hsiung Lee
DOI:10.1016/j.bmcl.2007.09.081
日期:2007.12
3-O-3'(or 2')-Methylsuccinyl-betulinic acid (MSB) derivatives were separated by using recycle HPLC. The structures of four isomers were assigned by NMR and asymmetric synthesis. 3-O-3'S-Methylsuccinyl-betulinic acid (3'S-MSB, 4) exhibited potent anti-HIV activity with an EC(50) value of 0.0087microM and a TI value of 6.3x10(3), which is comparable to the data for bevirimat (DSB, PA-457), a current
3-O-3'(或 2')-甲基琥珀酰-桦木酸 (MSB) 衍生物通过使用循环 HPLC 进行分离。通过核磁共振和不对称合成确定了四种异构体的结构。3-O-3'S-Methylsuccinyl-betulinic acid (3'S-MSB, 4) 表现出有效的抗 HIV 活性,EC(50) 值为 0.0087microM,TI 值为 6.3x10(3),与数据相当用于 bevirimat (DSB, PA-457),一种当前的临床试验药物,也来源于桦木酸。4的抗HIV效力略好于AZT。