Synthesis of 2,2′-Anhydro-1-(3′-deoxy-3′-bromo-β-D-arabinofuranosyl)thymine and Its Derivatives from 5′-<i>O</i>-Trityl-2′,3′-thymidinene
作者:Katsumaro Minamoto、Masataka Oishi、Akikazu Kakehi、Kenji Watanabe、Toyohide Takeuchi
DOI:10.1246/cl.1992.2149
日期:1992.11
Reaction of 5′-O-trityl-2′,3′-thymidinene with hypobromous acid gave 2,2′-anhydro-1-(3′-deoxy-3′-bromo-5′-O-trityl-β-D-arabinofuranosyl)-(5R,6R)-trans-5-bromo-6-hydroxy-5,6-dihydrothymine (3) and its (5S,6S) trans analogue (4). These were transformed into the corresponding 5,6-epoxy analogues. Compounds 3 and 4 were debromohydrinated to the title 2,2′-anhydro nucleoside in high yields.
5'-O-trityl-2',3'-thymidinene 与次溴酸反应得到 2,2'-anhydro-1-(3'-deoxy-3'-bromo-5'-O-trityl-β-D -arabinofuranosyl)-(5R,6R)-trans-5-bromo-6-hydroxy-5,6-dihydrothymine (3) 及其 (5S,6S) 反式类似物 (4)。这些被转化为相应的 5,6-环氧类似物。化合物 3 和 4 以高产率脱溴氢化为标题 2,2'-脱水核苷。