作者:Stefan Pitsch
DOI:10.1002/hlca.19970800803
日期:1997.12.15
automated synthesis from appropriate building blocks, carrying a known photo-labile 2′-O-protecting group. A simple large-scale synthesis of the new, prefunctionalized L-ribose derivative 5 from D-glucose (Scheme 1) and its straightforward conversion into the five phosphoramidites 28–32 and five solid supports 38–42, respectively, were elaborated (Scheme 4). Within this project, a novel, superior strategy
对映异构体寡核糖核苷酸(= ENT -RNA)到35的序列长度和组成的(L构型的)核苷ENT腺苷,耳鼻喉科-鸟苷,耳鼻喉科-胞苷,耳鼻喉科-尿苷,1-(β-L- -核糖呋喃糖基)胸腺嘧啶是通过合适的构件通过自动合成制备的,带有已知的光不稳定2'- O-保护基。的一个简单的大规模合成新的,预官能化L-核糖衍生物5从d葡萄糖(方案1)和它的简单转化为五个亚磷酰胺28 - 32和五个固体载体38 -详细说明了42个(方案4)。在该项目中,一种新颖的,用于2'-合成优越策略ö - [(2-硝基苄基)氧基]甲基} -取代的关键中间体18 - 22通过其5'-区域选择性烷基化ö -dimethoxytritylated前体13 –开发了17个。此外,设计了用于最终的光诱导的从寡核苷酸序列切割2'- O-保护基团的改进的结构(方案5和图1)。所有实体的正确组成通过其MALDI-TOF质谱确定所制备的-寡核糖核苷酸。的1十和二聚体的1