摘要:
A novel carboxylic acid ester having the following general formula wherein R is alkoxyalkyl having 2 to 6 carbon atoms, cycloalkyl having 5 or 6 carbon atoms, tetrahydrofurfuryl, alkyl having 1 to 6 carbon atoms or said alkyl substituted with 1 or 2 hydroxyl groups, is a useful anti-inflammatory and analgesic agent.
摘要:
Novel benzo[a]phenazine derivatives of the formula wherein R 1 is hydrogen, halogen, methyl, hydroxyl or alkoxy, R 2 is -COO R S (wherein R 5 is hydrogen, straight or branched chain alkyl, cycloalkyl having 3 - 6 carbon atoms, benzyl or phenyl) or - CON R 6 (wherein R 6 and R 7 are the same or R 7 different and are each hydrogen or lower alkyl, or R 6 and R7 together with the nitrogen atom to which they are attached form pyrrolidine or piperidine), R 3 and R 4 are the same or different and are each hydrogen or lower alkyl, and n is an integer of 2 or 3, and the salts thereof are disclosed. These compounds have antitumor activity in mammals.
摘要:
A process for producing 1-(p-prenylphenyl)ethanol, which comprises reacting p-chloroprenylbenzene with magnesium at a temperature between 100°C and 150°C to form a Grignard reagent, and then reacting it with acetaldehyde.
摘要:
A process for preparing erythromycin A oxime or a salt thereof comprises reacting erythromycin A with hydroxylamine using an acid. Erythromycin A oxime and the salts thereof are useful as intermediates for the synthesis of macrolide antibiotics.
摘要:
A process for preparing erythromycin A oxime or a salt thereof comprises reacting erythromycin A with hydroxylamine using an acid. Erythromycin A oxime and the salts thereof are useful as intermediates for the synthesis of macrolide antibiotics.
摘要:
Novel benzo[a]phenazine derivatives of the formula wherein R 1 is hydrogen, halogen, methyl, hydroxyl or alkoxy, R 2 is -COO R S (wherein R 5 is hydrogen, straight or branched chain alkyl, cycloalkyl having 3 - 6 carbon atoms, benzyl or phenyl) or - CON R 6 (wherein R 6 and R 7 are the same or R 7 different and are each hydrogen or lower alkyl, or R 6 and R7 together with the nitrogen atom to which they are attached form pyrrolidine or piperidine), R 3 and R 4 are the same or different and are each hydrogen or lower alkyl, and n is an integer of 2 or 3, and the salts thereof are disclosed. These compounds have antitumor activity in mammals.
摘要:
A process for producing an a-arylalkanoic acid ester represented by the general formula wherein Ar represents an aryl group which may optionally be substituted, and R' and R 2 , independently from each other, represents a lower alkyl group, which comprises reacting a Grignard reagent prepared from an aryl halide of the general formula wherein Ar is as defined above and X 1 represents a halogen atom, and magnesium, with an a-haloalkanoic acid ester of the general formula wherein R' and R 2 are as defined above, and X 2 represents a halogen atom, said reaction of the Grignard reagent with the a-haloalkanoic acid ester of general formula (III) being carried out in the presence of a nickel compound.