The Ni–Pd catalyzed addition–cyclization of sulfanyl 1,6-diynes 2–9 with nucleobases is described. The reactions of N-tethered 1,6-diynes with N3-benzoylthymine, N4,N4-bis(Boc)cytosine, N3-benzoyluracil and N6,N6-bis(Boc)adenine exclusively afforded the pyrrolylmethyl and furylmethyl nucleotides in good yields. Deprotection of nucleobases was completed by treatment with acids or bases. Furthermore
在Ni-Pd催化
硫烷基-1,6-二炔的加成环化2 - 9与核碱基进行说明。的反应Ñ -tethered -1,6-二炔与Ñ 3 -benzoylthymine,Ñ 4,Ñ 4双(BOC)
胞嘧啶,Ñ 3 -benzoyluracil和Ñ 6,Ñ 6-双(Boc)
腺嘌呤以良好的产率专门提供了
吡咯基
甲基和
呋喃基
甲基核苷酸。核碱基的
脱保护通过用酸或碱处理完成。此外,
吡咯和
呋喃与亲核试剂如醇盐和胺的反应进行了
脱甲苯基反应,并以良好的产率转化为烷
氧基
甲基和芳基
氨基
甲基-
吡咯和
呋喃。