Methods for the synthesis of &agr;- hydroxy-&bgr;-amino acid and amide derivatives
    7.
    发明授权
    Methods for the synthesis of &agr;- hydroxy-&bgr;-amino acid and amide derivatives 失效
    α-羟基-β-氨基酸和酰胺衍生物的合成方法

    公开(公告)号:US06376649B1

    公开(公告)日:2002-04-23

    申请号:US09216134

    申请日:1998-12-18

    CPC classification number: C07C231/00 Y02P20/55 Y10T436/14 Y10T436/141111

    Abstract: Methods for the synthesis of &agr;-hydroxy-&bgr;-amino acid and amide derivatives and &agr;-ketoamide derivatives and novel derivatives made by these methods are provided. These methods involve reacting a N-terminally blocked (protected) aminoaldehyde with an isonitrile and a carboxylic acid to give an amino-&agr;-acyloxy carboxamide. The acyloxy group may be removed to give the derivative. Alternatively the protecting group is removed and acyl shift occurs to give the derivative. These derivatives are useful in the synthesis of compounds such as peptidyl &agr;-ketoamides and &agr;-hydroxy-&bgr;-carboxylic acid and amide derivatives. Certain of these compounds have been reported to have activity as inhibitors of proteases, such as serine proteases and cysteine proteases.

    Abstract translation: 提供了通过这些方法制备的α-羟基-β-氨基酸和酰胺衍生物和α-酮酰胺衍生物和新型衍生物的合成方法。 这些方法包括使N-末端封闭的(保护的)氨基醛与异腈和羧酸反应,得到氨基-α-酰氧基甲酰胺。 可以除去酰氧基以得到衍生物。 或者,除去保护基团并发生酰基转移以得到衍生物。 这些衍生物可用于合成诸如肽基α-酮酰胺和α-羟基-β-羧酸和酰胺衍生物的化合物。 据报道,某些这些化合物具有蛋白酶抑制剂的活性,如丝氨酸蛋白酶和半胱氨酸蛋白酶。

    Pyrimidine compounds as herbicides
    8.
    发明授权
    Pyrimidine compounds as herbicides 失效
    嘧啶化合物作为除草剂

    公开(公告)号:US5602077A

    公开(公告)日:1997-02-11

    申请号:US256339

    申请日:1994-07-13

    Abstract: A method is disclosed for controlling the growth of undesired vegetation in a plantation crop by applying to the locus of the crop an effective amount of a compound of formula I ##STR1## and A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, Y and Z are as defined in the disclosure. Also disclosed are novel substituted heterocyclic compounds and their agriculturally suitable compositions which are generally useful as herbicides, as well as methods of their use as general or selective preemergent or postemergent herbicides, or as plant growth regulants.

    Abstract translation: PCT No.PCT / US92 / 11330 Sec。 371日期:1994年7月13日 102(e)日期1994年7月13日PCT提交1992年12月30日PCT公布。 公开号WO93 / 14073 日期1993年7月22日公开了一种用于通过向作物场所施用有效量的式I化合物(IMAGE)和A,R1,R2,控制种植作物中不想要的植物生长的方法 ,R3,R4,X,Y和Z如本公开所定义。 还公开了新型取代的杂环化合物及其农业上合适的组合物,其通常可用作除草剂,以及它们用作一般或选择性前消化剂或芽后除草剂或作为植物生长调节剂的方法。

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