metaperiodate and then with sodium borohydride to afford the 2',3'-seco derivatives 9a-c, respectively. The acyclic nucleoside 4-chloro-2-(methylthio)-7-[[1,3-bis(benzyloxy)-2- propoxy]methyl]pyrrolo[2,3-d]pyrimidine was aminated, desulfurized with Raney Ni, and then debenzylated to provide the tubercidin analogue 11. Cytotoxicity evaluation against L1210 murine leukemic cells in vitro showed that although the
制备了许多与toyocamycin和sangivamycin在结构上相关的7-[((1,3-二羟基-2-丙氧基)甲基]
吡咯并[2,3d-d]
嘧啶衍
生物以及结核菌素,toyocamycin和sangivamycin的山高核苷。并测试其
生物学活性。用1,3-双(苄氧基)-2-丙氧基
甲基氯处理4-
氨基-6-
溴-5-
氰基
吡咯并[2,3-d]-
嘧啶的钠盐,得到化合物3,其未经分离就被
溴化为得到4-
氨基-5-
氰基-7-[[[1,3-双(苄氧基)-2-丙氧基]甲基]
吡咯并[2,3-d]
嘧啶。尽管催化氢解反应失败,但四
氯化苄成功裂解了4的苄基醚官能团,得到4-
氨基-5-
氰基-7-[((1,3-二羟基-2-丙氧基)甲基]
吡咯并[2,3-d] ]
嘧啶。
氰基6的常规官能团转化提供了许多新的5-取代的衍
生物。分别用偏
高碘酸钠和
硼氢化钠分别处理结核菌素(8a),丰卡霉素(8b)和桑
奇霉素(8c),分别得到2',3'