SYNTHESIS OF ANNONACEOUS ACETOGENINS AND ANALOGUES

甘草苷及其类似物的合成

• 批准号: 2448496
• 负责人: JAMES A MARSHALL
• 金额: $ 19.82万
• 依托单位: UNIVERSITY OF VIRGINIA
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2448496
• 关键词: antimetabolites; antineoplastics; drug design /synthesis /production; enzyme inhibitors; immunosuppression; oxidative phosphorylation; plant extracts; stereochemistry

DESCRIPTION: (Principal Investigator's) Synthetic approaches to representative Annonaceous acetogenins will be developed. These plant-derived materials exhibit a wide range of biological activities. Of special interest is their remarkably high ED50's against solid human tumor cell lines and their selective toxicity to tumor over normal cells. The active compounds inhibit mammalian NADH:ubiquinone reductase at Complex I in the mitochondria thereby causing shutdown of oxidative phosphorylation. Interestingly, they specifically inhibit the ubiquinone:NADH oxidase system in the plasma membranes of cancerous cells. They have also been found to exhibit immunosuppressant activity and to stimulate transport of potassium ions from lymphocytes by a mechanism similar to ionophore antibiotics. The use of the Annonaceous plants and their edible fruits in folk medicine suggest that the acetogenins therein are not highly toxic to humans. The synthetic approach will employ chiral allylic and allenic organometal reagents to introduce stereogenic centers with concurrent formation of carbon-carbon bonds.

描述：（首席研究员）综合方法 将开发具有代表性的番荔枝苷。 这些 植物源材料表现出广泛的生物活性。 的 特别令人感兴趣的是它们针对人类实体肿瘤的非常高的 ED50 细胞系及其对肿瘤相对于正常细胞的选择性毒性。 这 活性化合物抑制哺乳动物 NADH: 泛醌还原酶复合物 I 线粒体，从而导致氧化磷酸化的关闭。 有趣的是，它们特异性抑制泛醌：NADH 氧化酶系统 在癌细胞的质膜中。 他们还被发现 表现出免疫抑制活性并刺激钾的转运 通过类似于离子载体抗生素的机制从淋巴细胞中分离离子。 这 番荔枝属植物及其可食用果实在民间医学中的应用 表明其中的乙酰基对人体没有高毒性。 这 合成方法将采用手性烯丙基和烯丙基有机金属 引入立体中心并同时形成的试剂 碳-碳键。