Synthesis and Biological Applications of Some Novel Spiro Heterocycles Containing 1,3,4-Thiadiazine, Thiazole, and Oxazole Derivatives
作者:Vijay V. Dabholkar、Nitin V. Bhusari
DOI:10.1002/jhet.956
日期:2013.1
carbonylcyclopentanone (1) has been brominated to yield 2‐bromo‐2‐ethoxy carbonylcyclopentanone (2) which on further reaction with substituted thiosemicarbazones, thiocarbohydrazones, thiocarbamides and carbamides has furnished 1‐thia‐3,4‐diaza‐5,7‐dioxo‐2‐[(substituted benzylidine)‐amino]spiro[4.5]dec‐2‐ene (3a–e), 1‐thia‐3,4‐diaza‐5,7‐dioxo‐2‐[(substituted benzylidine)‐hydrazino] spiro[4.5]dec‐2‐ene (4a–e), 1‐thia
2-乙氧基carbonylcyclopentanone (1)已经被溴化,得到2-溴-2-乙氧基carbonylcyclopentanone (2) ,将其用取代的缩氨基硫脲,thiocarbohydrazones,thiocarbamides和carbamides进一步反应提供装饰1 -硫杂-3,4-二氮杂- 5, 7-二氧代-2-[[(取代的苄基)-氨基] spiro [ 4.5 ] dec-2-烯(3a-e),1-硫代-3,4-二氮杂-5,7-二氧代-2-[[取代苄基)-肼基] spiro [ 4.5 ] dec-2-烯(4a-e),1-噻唑-3-氮杂-2-(取代亚氨基)-4,6-二氧代-螺环[ 4.4 ]壬烷(5a–f )和1-氧杂-3-氮杂-2-(取代的亚氨基)-4,6-二氧杂螺[ 4.4 ]壬烷(6a–g)分别。在光谱分析的基础上阐明了化合物的结构。