摘要:
Provided is a method for selectively demethylating a 2-methoxy group. Specifically provided is a production method of a compound represented by formula (7) below through the following reactions.
摘要:
Compounds of formula: ##STR1## in which R.sub.1 represents a hydrogen atom or an alkyl, alkoxycarbonyl or an unsubstituted or substituted phenyl radical,R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl radical,R.sub.3 represents an alkyl, phenylalkyl, indanyl, cycloalkylalkyl or an unsubstituted or substituted phenyl radical, orR.sub.2 and R.sub.3 form a heterocycle together with the nitrogen atom to which they are attached, andR.sub.4 represents an unsubstituted or substituted phenyl radical, a naphthyl, indolyl or quinolyl radical or a phenylamino radical in which the phenyl ring is unsubstituted or substituted, their preparation and medicaments containing them.
摘要:
The invention is concerned with new herbicidally active 4-phenoxy-.alpha.-phenoxy-alkanecarboxylic acid derivatives, especially propionic acid esters of the type ##STR1## bearing in the first phenoxy radical a nitro group besides another substituent R.sub.1 which is preferably a halogen atom, the CF.sub.3 group is lower alkyl, alkoxy or alkoxycarbonyl group. The invention is further concerned with herbicidal compositions containing such new derivatives and with methods for the selective control of grass-like weeds in crops of dicotyledonous and monocotyledonous cultivated plants such as cereals.
摘要:
Novel benzoic acid compounds of the formula ##STR1## in which R is alkyl or substituted alkyl of up to 6 carbon atoms, where the substituents are selected from halogen, orR is aryl which is optionally substituted by halogen and/or by alkyl of up to 4 carbon atoms,R.sup.1 is alkyl, alkoxy or alkylmercapto, of in each case up to 4 carbon atoms, or halogen,R.sup.2 is hydrogen,R.sup.3 is hydrogen or halogen,R.sup.4 is hydroxyl, alkoxy of 1 to 6 carbon atoms or an amino group which is optionally substituted by one or two alkyl radicals each of up to 6 carbon atoms, andR.sup.5 is halogen or alkyl of up to 4 carbon atoms; are outstandingly effective and selective as herbicides.
摘要:
Optionally substituted 6-alkoxymethyl-1,2,3,5-tetrahydroimidazo[2,1-b]-quinazolin-2-ones and 7-alkoxymethyl-6-[H]-1,2,3,4-tetrahydropyrimido[2,1-b]-quinazolin-2-ones or the pharmaceutically acceptable salts thereof are compounds useful as blood platelet anti-aggregative and/or antihypertensive and/or bronchodilator agents in mammals, including humans.
摘要:
New phenyl benzoic acid and ester compounds particularly substituted 5-(substituted phenyl)benzoic acid and ester derivatives and processes for their preparation are claimed. The new phenyl benzoic acid and ester compounds described have antiinflammatory, anti-pyretic and analgesic activity.