New compounds of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 each independently represent an alkyl group containing 1 to 4 carbon atoms, or an alkoxy group containing 1 to 3 carbon atoms, or halogen, R.sup.3 represents hydrogen, halogen, an alkyl group containing 1 to 4 carbon atoms, an alkoxy group containing 1 to 3 carbon atoms, an amino group or a nitro group, A represents ##STR2## which is bonded to the benzene ring by its sulphur or nitrogen atom and in which R.sup.4 is hydrogen or an alkyl group containing 1 to 4 carbon atoms; together with salts thereof with physiologically acceptable acids and, when R.sup.4 is hydrogen, with physiologically acceptable bases are described. The compounds are of use in inhibiting thrombosis formation, in treating thrombosis and in fibronolytic therapy. Various methods of producing the new compounds are described involving the building up of the --A--CH.sub.2 --CH.sub.2 --S--CH.sub.2 CH.sub.2 NH.sub.2 side chain from aromatic precursors having an incomplete side chain or by introducing at least one of the R.sup.1, R.sup.2 or R.sup.3 substituents into a precursor lacking that substituent or from an amino-protected precursor.
申请人:The Government of the United States of America, as
represented by the Secretary, Department of
Health and Human Services
公开号:EP2292630B1
公开(公告)日:2015-11-25
Piperazine as a Linker for Incorporating the Nitric Oxide-Releasing Diazeniumdiolate Group into Other Biomedically Relevant Functional Molecules
作者:Joseph E. Saavedra、Melissa N. Booth、Joseph A. Hrabie、Keith M. Davies、Larry K. Keefer
DOI:10.1021/jo9901539
日期:1999.7.1
in which E = Na and R = dansyl and "MOM-PIPERAZI/NO" (E = CH3OCH2, R = H), whose half-life for NO release was estimated as 17 days. The latter agent has made possible the conversion of poly(vinyl chloride) and phosphatidylethanolamine to NO-releasing derivatives. This chemistry should allow introduction of diazeniumdiolate groups into a wide variety of natural products, drugs, polymers, and other molecules
已经设计了合成程序以利用双官能胺哌嗪 (pip) 作为能够将释放一氧化氮 (NO) 的二氮烯二醇官能团 [N(O)NO] 连接到多种生物医学有用分子的连接体。其中一个氨基带有二氮烯二醇酯,它可以根据需要在氧上被取代以控制其离解为 NO,而另一个用于提供适合与需要 NO 供体能力的分子共价键合的位点。结构为 R-pip-N(O)[分子式:见正文]NOE 的 N,N'-二取代哌嗪是通过使用氨基的亲核特性或通过将其转化为亲电部分与亲核中心反应来制备的在要衍生的分子中。据报道,其中 E = CH3 和 R 基团与 N'-氮结合的例子:通过酰胺键与药物布洛芬和氨基酸衍生物 N-乙酰甲硫氨酸的羧基相连;通过尿素分组到受保护赖氨酸的ε-氨基;通过氨基甲酸酯键连接到聚(乙二醇);并通过替换烟酰胺和腺苷的 NH2 氮。通过引入 BrCH2CH2OSO2Cl 作为一种新型、高效的溴乙基化剂,促进了 E = 乙