摘要:
A process has been developed for preparing 2-methoxymethyl-1,4-benzenediamine (IV-a), other compounds of formula (IV), and the salts thereof, all of which may be used as primary intermediates in compositions for dyeing keratin fibers.
摘要:
Disclosed is a method for producing 2-amino-5-iodobenzoic acid wherein 2-aminobenzoic acid (A) and a molecular iodine (B) are reacted in a liquid phase in the presence of an oxidant. Hydrogen peroxide is preferably used as the oxidant. This method does not require a step for refining 2-amino-5-iodobenzoic acid or a step for recovering iodine, and enables to economically advantageously produce high-quality 2-amino-5-iodobenzoic acid with high yield. The thus-produced 2-amino-5-iodobenzoic acid can be advantageously used as a pharmaceutical intermediate, an agricultural chemical, a raw material for functional chemicals or the like.
摘要:
Disclosed is a method for producing 2-amino-5-iodobenzoic acid wherein 2-aminobenzoic acid (A) and a molecular iodine (B) are reacted in a liquid phase in the presence of an oxidant. Hydrogen peroxide is preferably used as the oxidant. This method does not require a step for refining 2-amino-5-iodobenzoic acid or a step for recovering iodine, and enables to economically advantageously produce high-quality 2-amino-5-iodobenzoic acid with high yield. The thus-produced 2-amino-5-iodobenzoic acid can be advantageously used as a pharmaceutical intermediate, an agricultural chemical, a raw material for functional chemicals or the like.
摘要:
The present invention relates to a compound formula (I): wherein (II) is (III) or (IV), X is bond, -CH2-, -O- or -NH-, R1 and R12 are each independently hydrogen, halogen, lower alkyl, etc., R2 is hydrogen or optionally substituted lower alkyl, R3 is hydrogen or an amino protective group, R4, R5 and R6 are each independently hydrogen or optionally substituted lower alkyl, R7 is -Z-R13, in which Z is bond, etc., and R13 is carboxy, lower alkoxycarbonyl, (lower alkylsulfonyl) carbamoyl or lower alkanoylsulfamoyl, R8 is -Y-R9, in which Y is bond, -CH2-, -O-, -S-, etc., and R9 is hydrogen, lower alkyl, cyclo (lower) alkyl, etc., and R11 is hydrogen, lower alkyl, lower alkoxy, etc., or a salt thereof. The compound (I) of the present invention and pharmaceutically acceptable salts thereof are useful for the prophylactic and/or the therapeutic treatment of pollakiurea or urinary incontinence.
摘要:
Compounds of formula (I) or a pharmaceutically acceptable derivative thereof: wherein A, B, Z, R1, R2a, R2b, R8, R9, and Rx are as defined in the specification, a process for the preparation of such compounds, pharmaceutical compositions comprising such compounds and the use of such compounds in medicine.