Synthesis and Antimalarial Assessment of a New Series of Orally Active Amino-Functionalized Spiro 1,2,4-Trioxanes
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- 作者：Chandan Singh ; Mohammad Hassam ; Niraj Krishna Naikade ; Ved Prakash Verma ; Ajit Shankar Singh ; Sunil. K. Puri
- 刊名：Journal of Medicinal Chemistry
- 出版年：2010
- 出版时间：November 11, 2010
- 年：2010
- 卷：53
- 期：21
- 页码：7587-7598
- 全文大小：1005K
- 年卷期：v.53,no.21(November 11, 2010)
- ISSN：1520-4804
文摘
Keto-trioxanes 7a−d, easily accessible in two steps from allylic alcohols 5a−d, underwent reductive amination with substituted anilines to furnish amino-functionalized trioxanes 8a−i, 9a−i, 10a−i, and 11a−i. All these new trioxanes were assessed for their oral antimalarial activity against multidrug-resistant Plasmodium yoelii nigeriensis in Swiss mice. 2-Naphthalene-based trioxanes 9c and 9i, the most active compounds of the series, provided 100% protection to the malaria-infected mice at 24 mg/kg × 4 days, while the related trioxane 9b and phenanthrene-based trioxane 11e provided a similar level of protection at 48 mg/kg × 4 days. All other trioxanes, except 10c, 10d, and 10g, provided 100% protection at 96 mg/kg × 4 days. In this model, β-arteether provided 100% protection at 48 mg/kg × 4 days and 20% protection at 24 mg/kg × 4 days.