作者:Cátia Vieira、Noélia Duarte、Mariana A. Reis、Gabriella Spengler、Ana Margarida Madureira、Joseph Molnár、Maria-José U. Ferreira
DOI:10.1016/j.bmc.2014.09.041
日期:2014.11
Aiming to optimize macrocyclic lathyrane-type diterpenes as effective Pgp modulators, the phytochemical study of the methanolic extract of Euphorbia boetica aerial parts was carried out. Two new macrocyclic 6,17-epoxylathyrane-type diterpenes, named epoxyboetiranes A (1) and B (2), along with three known analogues (3–5) were isolated. Epoxyboetirane A (1), a triacetate isolated in large amounts, was
为了优化大环柏油烷型二萜作为有效的Pgp调节剂,对大戟属地上部分的甲醇提取物进行了植物化学研究。两个新的大环6,17-epoxylathyrane型双萜,命名epoxyboetiranes A(1)和B(2)中,用三个已知类似物(沿3 - 5)中分离得到。大量分离出的三乙酸酯环氧乙烷基丁烷A(1)水解后得到环氧甲酚(6)。为了研究大环支架的取代方式对MDR逆转的影响,6用芳酰基,苯乙酰基,肉桂酰化和烷酰氯/酸酐,得到八个新酯,epoxyboetiranesÇ-J(7 - 14)。化合物的能力1 - 14为P糖蛋白(Pgp,ABCB1)调节剂是通过运输和化学敏感性测定法的组合进行评价,使用与人转染L5178Y小鼠T淋巴瘤细胞系中MDR1基因。在运输试验,除了1,3和6,所述化合物,在非细胞毒性浓度下,以剂量依赖的模式下显示强MDR逆转活性,表现出所有的新的酰基衍生物(7 - 14)与1相比,