申请人:Ciba-Geigy Corporation
公开号:US05010189A1
公开(公告)日:1991-04-23
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, halolactonization 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.
本发明涉及一种制备5-氨基-4-羟基戊酸衍生物的新型方法和中间体,其化学式为##STR1##其中R.sup.1表示氢,可选择性地取代烷基,环烷基,环烷基-低烷基,芳基,芳基-低烷基或天然氨基酸的基团,R.sup.2表示氢,可选择性地取代烷基,环烷基,环烷基-低烷基,芳基,芳基-低烷基,氨基,羟基,硫醇基,亚磺酰基或天然氨基酸的基团,R.sup.3表示可选择性地取代的羟基或氨基,通过适当的烯丙酸酯的sigma-转位,γ,δ-不饱和酸或其适当衍生物的卤代内酯化,卤素与含氮亲核试剂的交换,开环内酯环并释放氨基的方法制备。化合物I的式是制备抑制肾素的起始材料,具有降压作用。