Thieno[2,3-<i>d</i>]pyrimidines in the Synthesis of New Fused Heterocyclic Compounds of Prospective Antitumor and Antioxidant Agents (Part II)
作者:Ashraf A. Aly、Mohamed Ramadan、Ashraf M. Mohamed、Esam A. Ishak
DOI:10.1002/jhet.843
日期:2012.9
5′‐tetrahydrospiro‐(indene‐2,2′‐thiazolo[2,3‐b]‐cycloalkyl[b]‐thieno[2,3‐d]pyrimidine)‐3′‐carbonitriles. However, the reaction of thienopyrimidines with 2,3‐dicyano‐1,4‐naphthoquinone proceeded to afford the fused cycloalkyl‐thieno form of naphtho[1,3]thiazolo[3,2‐a]thieno[2,3‐d]pyrimidine‐6.7,12‐triones. Reaction of 2‐hydrazino‐5,6,7,8‐tetrahydrobenzo[b]thieno[2,3‐d]pyrimidine‐4(1H)‐one with dimethyl acetylenedicarboxylate
偶氮二羧酸二乙酯和3,4,5,6-四氯-1,2-苯醌与环戊烷和环庚烷稠合的噻吩并嘧啶反应,通过S-S键形成原料的氧化二聚体。2当量的2,2'-(环六-2',5'-二烯-1,4-二亚烷基)二甲基腈与硫代嘧啶的反应得到3-(4',4'-二氰基亚甲基-环烷基[ a ] -2,5 -二烯基)-4-氧代-6,7,8,9-四氢-5 H-环庚庚[4,5]-[1,3]噻唑洛[3,2- a ]-噻吩[2,3- d ]嘧啶-2-亚烷基-2-二碳腈。硫代嘧啶与2- [1,3-二氧代-1H-茚满-2(3 H)-亚烷基]丙二腈反应生成1,3,5'-三氧代-1,3,3',5'-四氢螺‐(茚2,2'-噻唑并[2,3- b ]-环烷基[ b ]-噻吩并[2,3- d ]嘧啶)-3'-腈。然而,噻吩并嘧啶类与2,3-二氰基-1,4-萘醌的反应开始产生萘并[1,3]噻唑并[3,2- a ]噻吩并[2,3- d ]的稠合环烷基-噻吩形式。嘧啶6