Indole-carboxylic carbon compounds and pharmaceutical compositions
申请人:Boehringer Mannheim G.m.b.H.
公开号:US04060626A1
公开(公告)日:1977-11-29
Indole-carboxylic acid compounds of the formula: ##STR1## wherein R.sub.1 is lower alkyl or alkoxy radical or halogen; R.sub.2 is halogen; lower alkyl or alkoxy radical; or R.sub.1 and R.sub.2 can together also form an alkylene bridge containing 3 to 5 carbon atoms, which can optionally contain one or more double bonds; and, but less preferably, when R.sub.1 is a lower alkyl or alkoxy radical, R.sub.2 can also be a hydrogen atom, and physiologically compatible salts and esters thereof, Are outstandingly effective as blood sugar-lowering agents.
A Simple and Efficient Synthesis of Ethyl 1-Aryl-4-formyl-1<i>H</i>-pyrazole-3-carboxylates
作者:Vasyl S. Matiychuk、Mykhaylo A. Potopnyk、Mykola D. Obushak
DOI:10.1002/jhet.1042
日期:2013.2
A new simple and convenient method of synthesis of ethyl 1-aryl-4-formyl-1H-pyrazole-3-carboxylates from aromatic amines via diazonium salts has been developed. Hydrolysis and hydrazinolyization of these compounds has been investigated.