Design and Synthesis of Some New α‐Phenyl Cinnamoyl Derivatives for Selective Protection of Purine Nucleosides
作者:Snehlata Tripathi、Krishna Misra、Yogesh S. Sanghvi
DOI:10.1080/00397910500278867
日期:2005.12
Abstract Three new α‐phenylcinnamic acid derivatives [4‐methoxy‐α‐phenylcinnamic acid, α‐(4‐methoxyphenyl)‐cinnamic acid, and 4,4′‐bismethoxy‐α‐phenylcinnamic acid] were synthesized, characterized, and selectively used for protecting the exocyclic amino function of purine nucleosides (2′‐deoxyadenosine and 2′‐deoxyguanosine) via active ester generation. The acids were first activated using p‐nitrophenol
摘要 合成、表征和选择性使用了三种新的α-苯基肉桂酸衍生物[4-甲氧基-α-苯基肉桂酸、α-(4-甲氧基苯基)-肉桂酸和4,4'-双甲氧基-α-苯基肉桂酸]。用于通过活性酯生成保护嘌呤核苷(2'-脱氧腺苷和 2'-脱氧鸟苷)的环外氨基功能。这些酸首先使用对硝基苯酚活化,然后这些活化的酯用于氨基的选择性保护。已发现 2'-脱氧鸟苷和 2'-脱氧腺苷的 N 保护衍生物对酸具有足够的稳定性,从而最大限度地减少了寡脱氧核糖核苷酸合成方案下的脱嘌呤作用。N-保护的嘌呤核苷的合成容易,它们在酸性环境下的稳定性,