申请人:Ciba-Geigy Corporation
公开号:US04898977A1
公开(公告)日:1990-02-06
The invention relates to novel processes and intermediates for the preparation of 5-amino-4-hydroxyvaleric acid derivatives of the formula ##STR1## in which R.sup.1 represents hydrogen, optionally substituted alkyl, cycloalkyl, cycloalkyl-lower alkyl, aryl, aryl-lower alkyl or the radical of a natural amino acid, R.sup.2 represents hydrogen, optionally substituted alkyl, cycloalkyl, cycloalkyl-lower alkyl, aryl, aryl-lower alkyl, amino, hydroxy, mercapto, sulphinyl, sulphonyl or the radical of a natural amino acid, and R.sup.3 represents optionally substituted hydroxy or amino, by sigmatropic rearrangement of a suitable allyl ester, halolactonisation of the resulting .gamma.,.delta.-unsaturated acid or of a suitable derivative thereof, exchange of halogen for a nitrogen-containing nucleophile, opening of the lactone ring and freeing of the amino group. Compounds of the formula I are starting materials for the preparation of renin-inhibitors which have an anti-hypertensive action.
该发明涉及一种用于制备5-氨基-4-羟基戊酸衍生物的新工艺和中间体,其化学式为:其中R.sup.1代表氢、可选择地取代的烷基、环烷基、环烷基-较低烷基、芳基、芳基-较低烷基或天然氨基酸的基团,R.sup.2代表氢、可选择地取代的烷基、环烷基、环烷基-较低烷基、芳基、芳基-较低烷基、氨基、羟基、巯基、亚砜基、磺酰基或天然氨基酸的基团,R.sup.3代表可选择地取代的羟基或氨基,通过适当烯丙基酯的重排、所得γ、δ-不饱和酸的卤内酯化或其适当衍生物的卤素与含氮亲核试剂的交换、环内酯开环和氨基的释放。化合物I的起始物质用于制备具有抗高血压作用的肾素抑制剂。