来自克里诺伊德的抗微生物双人体Heterometra sp
Vítor F Freire1, Lucero Martínez-Fructuoso1, Rohitesh Kumar2
1Natural Products Branch, Developmental Therapeutic Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute Frederick Maryland 21702-1201 USA.
RSC advances
|December 3, 2024
概括
研究人员从海洋无脊椎动物中发现了新的抗菌化合物. 这些天然产品,从克里诺伊德提取物中分离出来,表现出对格拉姆阳性细菌的选择性活性,为抗药性提供了潜在的新线索.
科学领域:
- 海洋天然产品 化学 化学
- 抗微生物药物发现发现
- 皮生物化学 皮生物化学
背景情况:
- 抗菌素耐药性 (AMR) 构成了全球重大健康挑战.
- 发现新的化学支架对于开发新的抗菌剂至关重要.
- 海洋生物,如类动物,是独特的生物活性化合物的丰富来源.
研究的目的:
- 为了研究从crinoid的有机提取物,Heterometra sp.的抗菌活性.
- 隔离和描述具有潜在抗菌性能的新型天然产品.
- 确定分离化合物的化学结构和绝对配置.
主要方法:
- 高通量选的crinoid提取物部分.
- 涉及隔离和净化技术的化学研究.
- 使用高分辨率电喷射电离质谱法 (HRESIMS) 和1D/2D核磁共振 (NMR) 谱法进行结构阐明.
- 通过化学和奇罗光学方法确定绝对配置.
主要成果:
- 从*Heterometra* sp.中分离出了三种天然产品. 提取物:crinemodin bianthrone (1),1'-dehydrocrinemodin bianthrone (2) (一种新的结构),以及1'-hydroxycrinemodin bianthrone (3).它们的成分包括:
- 确定了化合物1-3的平面结构和绝对配置.
- 化合物3在DMSO和胺中表现出不稳定性,观察到质子化学转移的变化.
- 化合物1和3显示出针对格拉姆阳性细菌菌株的选择性抗菌活性.
结论:
- 这项研究成功地从一个crinoid中分离和表征了三种bianthrone衍生物,包括一个新的化合物.
- 化合物1和3具有选择性抗微生物活性,突出显示它们作为新抗菌剂的潜在导体.
- 这项研究有助于寻找新的化学支架来打击抗菌素耐药性.
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