摘要:
The present invention is comprised of improved methods in the preparation of oxazoles which results in higher yields with less impurities and contaminants. Oxazoles constitute valuable intermediates in the synthesis of pharmaceutically active substances such as, for example peroxisome proliferator activated receptor (PPAR) agonists which are pharmaceutical actives which can have a positive influence on both lipid and glucose metabolism.
摘要:
The invention is related to a process for preparing compounds of the formula IV by means of conversion of aromatic aldehydes of the formula I using α-ketoximes of the formula II via N-oxides of the formula III to halomethyloxazoles of the formula IV, wherein R1, R2, R3, R4, R5, R6, R7, R8, X1, X2, X3, o, n1 and n2 are as defined herein.
摘要:
The present invention is directed to compounds of Formula III wherein the R1-R7 groups or substituents are defined herein. The present invention also comprises improved methods in the preparation of oxazoles in which the compounds of Formula III are intermediates and which results in higher yields with less impurities and contaminants. Oxazoles constitute valuable intermediates in the synthesis of pharmaceutically active substances such as, for example peroxisome proliferator activated receptor (PPAR) agonists which are pharmaceutical actives which can have a positive influence on both lipid and glucose metabolism.