Abstract:
The present invention relates to the manufacture of the compounds of formula (I) said compounds of formula (I) being valuable intermediates in the manufacture of Dolastatin 10 analogues, which are useful in the treatment of cancer.
Abstract:
The present invention relates to the manufacture of the compounds of formula (I) said compounds of formula (I), or their lithium salts, being valuable intermediates in the manufacture of Dolastatin analogues, which are useful in the treatment of cancer.
Abstract:
The present invention relates to a process for the preparation of a 4,5-diamino shikimic acid derivative of formula (I) and pharmaceutically acceptable addition salts thereof wherein R 1 , R 1’ are independent of each other H or alkyl, R 2 is an alkyl and R 3 , R 4 are independent of each other H or an alkanoyl, with the proviso that not to both R 3 and R 4 are H. 4,5-diamino shikimic acid derivatives of formula I, especially the (3R,4R,5S)-5-amino-4-acetylamino-3- (1-ethyl-propoxy)-cyclohex-l-ene-carboxylic acid ethyl ester and its pharmaceutically acceptable additional salts are potent inhibitors of viral neuraminidase.
Abstract:
The present invention comprises a process for the preparation of 3-chloro-2-fluoro-5- trifluoromethyl benzoic acid of the formula or of a salt thereof. 3-Chloro-2-fluoro-5-trifluoromethyl benzoic acid or salts thereof are versatile intermediates for the preparation of active pharmaceutical or agrochemical agents.
Abstract:
The invention relates to a novel process for the preparation of chiral 2-(4-aminophenyl) morpholines of the formula (I) wherein R1 is hydrogen an amino protecting group. The chiral 2-(4-aminophenyl) morpholines of the formula I are key intermediates for the preparation of compounds that have a good affinity to the trace amine associated receptors (TAARs).