作者:Mailavaram Raghu Prasad、John Prashanth、Kalghatgi Shilpa、Deb Pran Kishore
DOI:10.1248/cpb.55.557
日期:——
11,12-pentahydrocyclohepta[b]thieno[3,2-e]pyrimidin-3-thiones has been synthesized. The intermediates 4-chloro-2-substituted-5,6,7-trihydrocyclopenta/5,6,7,8,9-pentahydrocyclohepta[b]thieno[2,3-d]pyrimidines were prepared by warming 2-substituted-5,6,7-trihydrocyclopenta/5,6,7,8,9-pentahydrocyclohepta[b]thieno[2,3-d]pyrimidin-4[3H]-ones with oxalyl chloride. Thieno[2,3-d]pyrimidin-4[3H]-ones were prepared
一系列新颖的5-取代的1,2,4-三唑[4,3-c] 8,9,10-三氢环戊/ 8,9,10,11,12-五氢环庚[b]噻吩并[3,已经合成了2-e]嘧啶-3-硫酮。通过加热2-取代-5,制备中间体4-氯-2-取代-5,6,7-三氢环戊/ 5,6,7,8,9-五氢环庚[b]噻吩并[2,3-d]嘧啶。 ,6,7-三氢环戊5 / 5,6,7,8,9-五氢环庚[b]噻吩并[2,3-d]嘧啶-4 [3H]-与草酰氯。噻吩并[2,3-d]嘧啶-4 [3H]-是通过新颖的,微波辅助的,无溶剂的合成路线在迄今文献中从未报道过的由噻吩的邻氨基酯制备的碱性条件下制备的。无需进一步纯化即可将氯代衍生物肼化,得到2-取代的4-肼基-5,6,7-三氢环戊5 / 5,6,7,8,9-五氢环庚[b] thieno [2,3-d]嘧啶类。这些化合物用二硫化碳环化,以定量收率得到标题化合物。使用氨苄青霉素作为标准品,针对