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    • 51. 发明授权
    • Amino acid dysiherbaine
    • 氨基酸dysiherbaine
    • US6147230A
    • 2000-11-14
    • US77371
    • 1999-05-26
    • Keiko ShimamotoRyuichi SakaiHisao KamiyaMichio Murata
    • Keiko ShimamotoRyuichi SakaiHisao KamiyaMichio Murata
    • A61K31/35A61K35/56A61P25/00A61P43/00C07D493/04C07D311/00
    • C07D493/04
    • The present invention provides a novel amino acid dysiherbaine which is a non-NMDA type glutamate receptor agonist as well as salts and biological precursors thereof, which are useful as experimental materials for elucidating neuronal death or the functions of signal transduction of the central nervous system associated with glutamate receptors and which provide a possibility for the development of a glutamate receptor blocker.A novel amino acid dysiherbaine represented by the formula (1): ##STR1## is obtained by purifying an aqueous extract of a sponge such as D. herbacea on the basis of toxicity to mice by liquid chromatography using Sephadex LH20 or the like and HPLC using a C18 column, and optionally converting it into a biological precursor thereof.
    • PCT No.PCT / JP97 / 03047 Sec。 371日期:1998年5月26日 102(e)日期1998年5月26日PCT 1997年9月1日提交PCT本发明提供了一种新型氨基酸异丁啡碱,其是非NMDA型谷氨酸受体激动剂及其盐和生物前体,其可用作实验材料 阐明神经元死亡或与谷氨酸受体相关的中枢神经系统的信号转导的功能,并且其提供谷氨酸受体阻断剂发展的可能性。 通过使用Sephadex LH20等进行液相色谱纯化基于对小鼠的毒性的海绵的含水提取物的纯化得到的式(1)所示的新型氨基酸异冰贴肉碱,使用C18柱 ,并且任选地将其转化为其生物前体。
    • 60. 发明授权
    • Herbicidal pyrones
    • US4939278A
    • 1990-07-03
    • US188800
    • 1988-04-13
    • Janet E. Anderson-McKayAndris J. Liepa
    • Janet E. Anderson-McKayAndris J. Liepa
    • A01N43/16A01N43/24C07D309/00C07D309/32C07D309/36C07D311/00C07D311/96C07D409/00C07D409/04C07D495/00C07D495/10
    • C07D495/10A01N43/16A01N43/24C07D309/32C07D311/96
    • Compounds of the general formula (2) and isomeric and/or tautomeric forms thereof ##STR1## characterized in that R.sup.1 is selected from the group consisting of: hydrogen; alkyl; alkenyl; alkynyl; cycloalkyl; cycloalkenyl; substituted alkyl or substituted cycloalkyl wherein the alkyl or cycloalkyl group is substituted with a substituent selected from the group consisting of alkoxy, alkylthio, optionally substituted phenyl, optionally substituted heterocycle; optionally substituted phenyl; optionally substituted heterocycle, alkyl sulfonyl; optionally substituted benzene sulfonyl; an acyl group; and an inorganic or organic cation;R.sup.2 is selected from the group consisting of: alkyl; alkenyl; cycloalkyl; cycloalkenyl; haloalkenyl; alkynyl; haloalkynyl; substituted alkyl or substituted cycloalkyl wherein the alkyl or cycloalkyl group is substituted with a substituent selected from the group consisting of halogen, alkoxy, alkylthio, optionally substituted phenyl, and optionally substituted heterocycle; optionally substituted phenyl; and optionally substituted heterocycle;R.sup.3 is selected from the group consisting of: alkyl; haloalkyl; alkenyl; cycloalkyl; cycloalkenyl; alkynyl; and optionally substituted phenyl;R.sup.4 is selected from the group consisting of: alkynyl; haloalkyl; haloalkenyl; cycloalkyl; cycloalkenyl; substituted alkyl or substituted cycloalkyl wherein the alkyl or cycloalkyl group is substituted with a substituent selected from the group consisting of alkoxy, alkylthio, oxo, acyl, alkoxycarbonyl, (alkoxyimino) alkyl, ketal, carboxylic acid optionally substituted phenyl, and optionally substituted heterocycle; and optionally substituted heterocycle;R.sup.5 is selected from the group consisting of: alkyl; alkanyl; alkynyl; haloalkyl; haloalkenyl; cycloalkyl; cycloalkenyl; substituted alkyl or substituted cycloalkyl wherein the alkyl or cycloalkyl group is substituted with a substituent selected from the group consisting of alkoxy, alkylthio, oxo, acyl, alkoxycarbonyl, (alkoxyimino) alkyl, betal, carboxylic acid optionally substituted phenyl, and optionally substituted heterocycle; and optionally substituted heterocycle;orR.sup.4 and R.sup.5 together with the carbon to which they are attached form a substituted or unsubstituted saturated or partially saturated heterocyclic or carbocyclic ring containing 3 or more ring atoms, which ring may be bridged or fused and may contain substituents selected from the group consisting of hydrogen; alkyl; alkenyl; alkynyl; substituted alkyl wherein the alkyl group is substituted with a substituent selected from the group consisting of alkoxy, alkylthio, optionally substituted phenyl, and optionally substituted heterocycle; optionally substituted phenyl; and optionally substituted heterocycle; oxo; acyl; alkoxy; alkylthio; alkoxycarbonyl; (alkoxyimino) alkyl; ketal; and carboxylic acid.The compounds of formula (2) have herbicidal and plant growth regulating properties.