Synthesis and separation of diastereomers of uridine 2′,3′-cyclic boranophosphate
作者:Kaizhang He、Barbara Ramsay Shaw
DOI:10.1016/s0960-894x(00)00700-9
日期:2001.3
The first boron-containing 2',3'-cyclic phosphate-modified analogue, uridine 2',3'-cyclic boranophosphate (2',3'-cyclic-UMPB), was synthesized. 5'-O-Protected uridine was cyclophosphorylated by diphenyl H-phosphonate to yield uridine 2',3'-cyclic H-phosphonate, which upon silylation followed by boronation and subsequent acid treatment gave 2',3'-cyclic-UMPB in high yield. The two diastereomers of 2',3'-cyclic-UMPB were separated by HPLC. An alternative method for synthesis of uridine 2',3'-cyclic phosphorothioate (2',3'-cyclic-UMPS) via H-phosphonate was also described. (C) 2001 Elsevier Science Ltd. All rights reserved.