A series of sixteen A-ring modified (2,3-indolo-, 2-benzylidene) oleanonic acid derivatives, holding some cyclic amines, linear polyamines and benzylaminocarboxamides at C28, has been synthesized and screened for antiviral activity against influenza A/PuertoRico/8/34 (H1N1) and Dengue virus serotypes of DENV-1, -2, -3, -4. It was found that 28-homopiperazine 2 and 3-N-phthalyl 22 amides of oleanonic acid demonstrated high potency with selectivity index SI 27 (IC50 21 μM) and 42 (IC50 12 μM). Oleanonic acid aminoethylpiperazine amide 6 and C-azepano-erythrodiol 23 appeared to be the most effective compounds against DENV-1 (IC50′s 67 and 107 μM) and -2 (IC50′s 86 and 68 μM correspondingly) serotypes.
合成并筛选了 16 种 A 环修饰(2,3-
吲哚-、2-亚苄基)
齐墩果酸衍
生物系列,其中 C28 位含有一些环胺、线性
多胺和苄
氨基羧酰胺,这些衍
生物对 A/波多黎各/8/34(H1N1)流感和 DENV-1、-2、-3、-4 登革热病毒血清型具有抗病毒活性。研究发现,
齐墩果酸的 28-
高哌嗪 2 和 3-N-
邻苯二甲酸 22 酰胺具有很高的效力,选择性指数 SI 分别为 27(IC50 21 μM)和 42(IC50 12 μM)。
齐墩果酸氨基乙基哌嗪酰胺 6 和 C-azepano-erythrodiol 23 似乎是对 DENV-1 血清型(IC50′s 67 和 107 μM)和-2 血清型(IC50′s 86 和 68 μM)最有效的化合物。