作者:Menglin Chen、Alice Maetzke、Svend J. Knak Jensen、Kurt V. Gothelf
DOI:10.1002/ejoc.200700646
日期:2007.12
A novel rearrangement of S-(2-aminoethyl) thiophosphates to N-(2-mercaptoethyl)phosphoramidates was discovered and developed. The reaction proceeds smoothly at room temperature under basic conditions and the resulting thiol could subsequently be alkylated. The reaction mechanism is investigated by electron structure calculations using density functional theory at the B3LYP/6-31G(d) and B3LYP/6-311+G(d
AMIDITE FOR SYNTHESIZING MODIFIED NUCLEIC ACID AND METHOD FOR SYNTHESIZING MODIFIED NUCLEIC ACID
申请人:FUJIHARA Tsuyoshi
公开号:US20090062521A1
公开(公告)日:2009-03-05
To provide an excellent amidite for synthesizing modified nucleic acid, which enables a protective group therein to be removed under a moderate condition, thereby stably producing a hydroxyl group-containing modified nucleic acid, and a method for synthesizing modified nucleic acid using the amidite. Specifically, an amidite for synthesizing modified nucleic acid, expressed by General Formula (I):
where X represents a base, Y represents a substituent, Z represents a protective group for protecting a hydroxyl group in the substituent, and Q represents one of a hydrogen atom, a hydroxyl group and a hydroxyl group protected by a protective group,
wherein the protective group can be removed in an aprotic solvent, and when the protective group is removed, the hydroxyl group emerges in the substituent, and a method for synthesizing modified nucleic acid using the amidite.