Method for isomerising the 10-methyl radical of erythromycin derivatives
    1.
    发明授权
    Method for isomerising the 10-methyl radical of erythromycin derivatives 有权
    红霉素衍生物的10-甲基异构化方法

    公开(公告)号:US6022965A

    公开(公告)日:2000-02-08

    申请号:US180641

    申请日:1998-11-11

    IPC分类号: A61K31/70 C07H17/08 C07H1/00

    CPC分类号: C07H17/08

    摘要: An isomerization method wherein a compound of formula ##STR1## wherein X and y together form a 3-oxo radical, or X is a hydrogen atom and Y is either a radical a ##STR2## where R.sub.2 is OH or O-acyl, or an O-alkyl or NH.sub.2 radical; R.sub.1 is a hydrogen atom or a methyl radical; Z is hydrogen or an acyl radical; and R is a hydrogen atom, an NH.sub.2 radical or a (CH.sub.2).sub.n Ar, NH(CH.sub.2).sub.n Ar or N.dbd.CH(CH.sub.2).sub.n Ar radical, in the form of a 10.alpha. isomer or a mixture of 10.alpha. and 10.beta. isomers, is exposed to a basic agent to give the corresponding compound of formula I in which the 10-methyl radical is in the .beta. position.

    摘要翻译: PCT No.PCT / FR97 / 00840 Sec。 371日期:1998年11月11日 102(e)1998年11月11日PCT PCT 1997年5月13日PCT公布。 出版物WO97 / 43297 日期:1997年11月20日一种异构化方法,其中其中X和Y一起形成3-氧代基,或X是氢原子,Y是其中R2是OH或O-酰基的基团,或O - 烷基或NH 2基; R1是氢原子或甲基; Z是氢或酰基; 和R是氢原子,NH 2基团或(CH 2)n Ar,NH(CH 2)n Ar或N = CH(CH 2)n Ar基,其为10α异构体或10α和10β异构体的混合物 暴露于碱性试剂中,得到相应的10-甲基在β位的式I化合物。

    Process
    2.
    发明授权
    Process 失效
    处理

    公开(公告)号:US5278322A

    公开(公告)日:1994-01-11

    申请号:US968429

    申请日:1992-10-29

    CPC分类号: C07D307/93

    摘要: A process for the preparation of a compound of the formula ##STR1## comprising reacting 1R, cis 2,2-dimethyl 3-(2-oxopropyl)-cyclopropane-1-carboxylic acid with an alkali metal, alkaline-earth metal or magnesium hypohalite, and oxidizing the 1R, cis 2,2-dimethyl 3-(hydroxy-carboxy-methyl)-cyclopropane-1-carboxylic acid or its salt or lactonic form thereof thus obtained with an oxidizing agent to obtain the compound of formula I and novel intermediates.

    摘要翻译: 一种制备式(I)化合物的方法,包括将1R,顺式2,2-二甲基3-(2-氧代丙基) - 环丙烷-1-羧酸与碱金属,碱土金属 或次卤酸镁,并用氧化剂氧化得到的1R,顺式2,2-二甲基3-(羟基 - 羧基 - 甲基) - 环丙烷-1-羧酸或其盐或内酯形式,得到式 我和新颖的中间体。

    Method for preparing 4-(3-pyridinyl)-1h-imidazole and the intermediates used
    3.
    发明授权
    Method for preparing 4-(3-pyridinyl)-1h-imidazole and the intermediates used 有权
    制备4-(3-吡啶基)-1H-咪唑的方法和所用的中间体

    公开(公告)号:US06353108B1

    公开(公告)日:2002-03-05

    申请号:US09743562

    申请日:2001-01-26

    IPC分类号: C07D40104

    CPC分类号: C07D401/04 C07D213/51

    摘要: The invention concerns a method for preparing compounds of formula (I) wherein R represents a hydrogen atom or an allyl radical containing up to 8 carbon atoms, characterised in that it consists in subjecting a compound of formula (II) wherein alc represents the residue of an alkyl radical containing up to 4 carbon atoms to the action of a compound of formula (III): RCONH2, wherein R retains its previous meaning, to obtain the compound of formula (IV) wherein R retains its previous meaning which is subjected to cyclization to obtain the desired product of formula (I).

    摘要翻译: 本发明涉及一种制备式(I)化合物的方法,其中R代表氢原子或含有至多8个碳原子的烯丙基,其特征在于它使式(Ⅱ)化合物其中alc代表 对于式(III)化合物的作用,含有至多4个碳原子的烷基:RCONH 2,其中R保留其先前的含义,以获得式(Ⅳ)化合物,其中R保持其先前的含义,其进行环化 得到所需的式(I)产物。