active in vivo against Eimeria tenella than their saturated congeners; therefore, some unsaturated (arylalkyl)thio derivatives were synthesized and investigated as anticoccidial agents. The novel compounds in this study (2 to 18) were prepared by the alkylation of 4-mercapto-1-beta-D-ribofuranosyl-1H-pyrazolo[3,4-d]pyrimidine (1), which was prepared by an enzymatic method. The (E)-4-cinnamylthio derivative
4-(烷
硫基)-1H-
吡唑并[3,4-d]
嘧啶的
核糖核苷已被证明是有用的抗球虫药[Krenitsky,TA; 骑乘,JL;GW科萨尔卡;Inmon,RB;赵安永; GB Elion;VS 威廉姆斯,RBJ Med。
化学 1982,25,32。TA Krenitsky;Elion,GBUS专利4299 283,1981]。在那项研究中,不饱和的4-烯丙基
硫代和4-巴甲基
硫代衍
生物(19和20)在体内对艾美球虫的活性比其饱和同类物更具活性。因此,合成了一些不饱和的(芳烷基)
硫代衍
生物,并作为抗球虫剂进行了研究。本研究中的新化合物(2至18)是通过将4-巯基-1-β-D-
呋喃呋喃糖基-1H-
吡唑并[3,4-d]
嘧啶(1)烷基化制备的(1)方法。(E)-4-肉桂
硫基衍
生物(2)和5'-单
磷酸酯(18)是体内对抗大肠杆菌的最具活性的化合物。在体内,在芳基部分(3至13)中具有取代基的类似物没有一个比