A new class of HIV-1 specific 6-substituted acyclouridine derivatives: synthesis and anti-HIV-1 activity of 5- or 6-substituted analogs of 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine (HEPT)
作者:Hiromichi Tanaka、Masanori Baba、Hiroyuki Hayakawa、Takashi Sakamaki、Tadashi Miyasaka、Masaru Ubasawa、Hideaki Takashima、Kouichi Sekiya、Issei Nitta、Shiro Shigeta、Richard T. Walker、Jan Balzarini、Erik De Clercq
DOI:10.1021/jm00105a055
日期:1991.1
palladium-catalyzed cross-coupling between a 6-iodo derivative (16) and terminal alkynes. Following the methods, 21 C-6 substituted analogues were synthesized. Among these, 6-(cyclohexylthio) (8), 6-phenoxy (13), and 6-benzyl (27) derivatives showed anti-HIV-1 (HTLV-IIIB) activity with EC50 values of 8.2, 85, and 23 microM, respectively. Preparation of C-5 substituted derivatives was based on either LTMP
合成了一系列在C-5和C-6位置均取代的新型无环尿苷衍生物,目的是提高最近报道的HIV-1特异性铅1-[((2-羟基乙氧基)甲基] -6的活性-(苯硫基)胸腺嘧啶(HEPT)。基于以下三种方法进行C-6取代衍生物的制备:(1)胸腺嘧啶衍生物的LDA(二异丙基氨基锂)锂化(4)以及随后与亲电试剂的反应,(2)HEPT的加成消除反应或其6-(苯亚磺酰基)衍生物(10),或(3)钯催化的6-碘衍生物(16)与末端炔烃的交叉偶联。按照这些方法,合成了21个C-6取代的类似物。其中,6-(环己硫基)(8),6-苯氧基(13),和6-苄基(27)衍生物显示抗HIV-1(HTLV-IIIB)活性,EC50值分别为8.2、85和23 microM。C-5取代衍生物的制备基于6-(苯硫基)尿嘧啶衍生物37的LTMP(2,2,6,6-四甲基哌啶锂)锂化或上述钯催化的5-碘-异氰酸酯的交叉偶联。 6-(苯硫基)