The present invention discloses novel and improved nucleosidic and nucleotidic compounds that are useful in the light-directed synthesis of oligonucleotides, as well as, methods and reagents for their preparation. These compounds are characterized by novel photolabile protective groups that are attached to either the 5′- or the 3′-hydroxyl group of a nucleoside moiety. The photolabile protective group is comprised of a 2-(2-nitrophenyl)-ethyoxycarbonyl skeleton with at least one substituent on the aromatic ring that is either an aryl, an aroyl, a heteroaryl or an alkoxycarbonyl group. The present invention includes the use of the aforementioned compounds in light-directed oligonucleotide synthesis, the respective assembly of nucleic acid microarrays and their application.
本发明揭示了新型和改进的核苷酸和核苷酸化合物,其在寡核苷酸的光导向合成中有用,以及其制备的方法和试剂。这些化合物的特点是具有新型光敏保护基,该保护基连接到核苷酸基团的5'-或3'-羟基。光敏保护基由2-(2-
硝基苯基)-乙氧羰基骨架组成,其芳环上至少有一个取代基,可以是芳基、芳酰基、杂环芳基或烷氧羰基基团。本发明包括上述化合物在光导向寡核苷酸合成中的使用,核酸微阵列的相应组装及其应用。