Efficient Approaches toward the Solid-Phase Synthesis of New Heterocyclic Azoniaspiro Ring Systems: Synthesis of Tri- and Tetrasubstituted 10-Oxo- 3,9-diaza-6-azoniaspiro[5.5]undecanes
作者:Adel Nefzi、Rodegar T. Santos
DOI:10.1021/jo0513921
日期:2005.11.1
9-trisubstituted 10-oxo-3,9-diaza-6-azoniaspiro[5.5]undecanes, were obtained starting from resin-bound reduced dipeptides. The azoniaspiro cation was formed by intramolecular attack of a tertiary nitrogen on pendent α-bromocarbonyl. N-3 acylated and N-3 alkylamino carbonyl derivatives of the 1,8,9-trisubstituted 10-oxo-3,9-diaza-6-azoniaspiro[5.5]undecanes were obtained following in solution treatment
描述了一种新颖的杂环氮杂螺环系统平行固相合成的有效方法。从树脂结合的还原二肽开始获得目标化合物1,8,9-三取代的10-氧代-3,9-二氮杂-6-氮杂螺[5.5]十一烷。氮杂螺阳离子是通过叔氮在悬垂的α-溴羰基上的分子内侵蚀而形成的。在对N -3氮杂螺环衍生物进行固溶处理后,得到了1,8,9-三取代的10-氧代-3,9-二氮杂-6-氮杂螺环[5.5]十一烷的N -3酰化和N -3烷基氨基羰基衍生物。与不同的羧酸和异氰酸酯。