P-Chloroacetophenone oxime compounds and pharmaceutical compositions
申请人:Provesan S.A.
公开号:US04342763A1
公开(公告)日:1982-08-03
Derivatives of p-chloroacetophenone oxime, the preparation thereof and the use thereof as medicaments. The compounds of the invention correspond to the general formula I ##STR1## wherein R.sub.1 and R.sub.2 each represent a lower alkyl radical, preferably a C.sub.1 to C.sub.4 radical, or, in association with the nitrogen atom to which they are linked, form a saturated heterocyclic group, and the physiologically acceptable acid addition salts. The compounds of the invention are useful as medicaments and particularly as analgesics, antipyretics, anti-inflammatory agents and antitussives.
Beger,J. et al., Journal fur praktische Chemie (Leipzig 1954), 1969, vol. 311, p. 408 - 419
作者:Beger,J. et al.
DOI:——
日期:——
Manufacturing process for N-carbobenzyloxy-L-glutamic
申请人:Moringa Milk Industry, Co., Ltd.
公开号:US04552975A1
公开(公告)日:1985-11-12
The invention relates to manufacturing process for a halide or an organic sulfonate of N-carbobenzyl-L-glutamic acid-.alpha.-cholinester in high purification, which is useful as e.g. hypotensive drug. According to the prior art, undesired .gamma.-form byproduct is inevitably formed to be mingled with said .alpha.-form objective compound of which separation is difficult. It has been found that when using N-carbobenzyloxy-.gamma.-tert. butyl-L-glutamic acid-dicyclohexyl-ammonium salt readily available in high purification as starting material, reacting N, N-dimethyl-aminoethylchloride therewith to form N-carbobenzyloxy-.gamma.-tert. butyl-L-glutamic acid-.alpha.-dimethylaminoethyl ester which is quaternerized to form N-carbobenzyloxy-.gamma.-tert. butyl-L-glutamic acid-.alpha.-cholinester salt, which is subjected to mild salt treatment, the objective compound can be obtained in high purification.